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  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedNetLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedNetLabel"/>
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  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTotalLabel"/>
  <link:labelLink xlink:role="http://www.xbrl.org/2003/role/link" xlink:type="extended">
    <link:label id="lab_ck0000898745_EmergingMarketsRiskMember_label_en-US" xlink:label="lab_ck0000898745_EmergingMarketsRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Emerging Markets Risk Member</link:label>
    <link:label id="lab_ck0000898745_EmergingMarketsRiskMember_documentation_en-US" xlink:label="lab_ck0000898745_EmergingMarketsRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Emerging Markets Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000898745_EmergingMarketsRiskMember" xlink:href="ck0000898745-20260825.xsd#ck0000898745_EmergingMarketsRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000898745_EmergingMarketsRiskMember" xlink:to="lab_ck0000898745_EmergingMarketsRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000898745_InvestmentCompanySecuritiesRiskMember_label_en-US" xlink:label="lab_ck0000898745_InvestmentCompanySecuritiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investment Company Securities Risk Member</link:label>
    <link:label id="lab_ck0000898745_InvestmentCompanySecuritiesRiskMember_documentation_en-US" xlink:label="lab_ck0000898745_InvestmentCompanySecuritiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Investment Company Securities Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000898745_InvestmentCompanySecuritiesRiskMember" xlink:href="ck0000898745-20260825.xsd#ck0000898745_InvestmentCompanySecuritiesRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000898745_InvestmentCompanySecuritiesRiskMember" xlink:to="lab_ck0000898745_InvestmentCompanySecuritiesRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000898745_FixedIncomeSecuritiesRiskMember_label_en-US" xlink:label="lab_ck0000898745_FixedIncomeSecuritiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fixed-Income Securities Risk Member</link:label>
    <link:label id="lab_ck0000898745_FixedIncomeSecuritiesRiskMember_documentation_en-US" xlink:label="lab_ck0000898745_FixedIncomeSecuritiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fixed-Income Securities Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000898745_FixedIncomeSecuritiesRiskMember" xlink:href="ck0000898745-20260825.xsd#ck0000898745_FixedIncomeSecuritiesRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000898745_FixedIncomeSecuritiesRiskMember" xlink:to="lab_ck0000898745_FixedIncomeSecuritiesRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000898745_HighPortfolioTurnoverRiskMember_label_en-US" xlink:label="lab_ck0000898745_HighPortfolioTurnoverRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">High Portfolio Turnover Risk Member</link:label>
    <link:label id="lab_ck0000898745_HighPortfolioTurnoverRiskMember_documentation_en-US" xlink:label="lab_ck0000898745_HighPortfolioTurnoverRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">High Portfolio Turnover Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000898745_HighPortfolioTurnoverRiskMember" xlink:href="ck0000898745-20260825.xsd#ck0000898745_HighPortfolioTurnoverRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000898745_HighPortfolioTurnoverRiskMember" xlink:to="lab_ck0000898745_HighPortfolioTurnoverRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000898745_DerivativesRiskCreditDefaultSwapsRiskMember_label_en-US" xlink:label="lab_ck0000898745_DerivativesRiskCreditDefaultSwapsRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivatives Risk, Credit Default Swaps Risk Member</link:label>
    <link:label id="lab_ck0000898745_DerivativesRiskCreditDefaultSwapsRiskMember_documentation_en-US" xlink:label="lab_ck0000898745_DerivativesRiskCreditDefaultSwapsRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Derivatives Risk, Credit Default Swaps Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000898745_DerivativesRiskCreditDefaultSwapsRiskMember" xlink:href="ck0000898745-20260825.xsd#ck0000898745_DerivativesRiskCreditDefaultSwapsRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000898745_DerivativesRiskCreditDefaultSwapsRiskMember" xlink:to="lab_ck0000898745_DerivativesRiskCreditDefaultSwapsRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000898745_C000190075Member_label_en-US" xlink:label="lab_ck0000898745_C000190075Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Multi-Sector Income Fund, Class R-6</link:label>
    <link:label id="lab_ck0000898745_C000190075Member_documentation_en-US" xlink:label="lab_ck0000898745_C000190075Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Multi-Sector Income Fund, Class R-6 (formerly Multi-Sector Income Fund, Class R-6)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000898745_C000190075Member" xlink:href="ck0000898745-20260825.xsd#ck0000898745_C000190075Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000898745_C000190075Member" xlink:to="lab_ck0000898745_C000190075Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000898745_ForeignCurrencyRiskMember_label_en-US" xlink:label="lab_ck0000898745_ForeignCurrencyRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Foreign Currency Risk Member</link:label>
    <link:label id="lab_ck0000898745_ForeignCurrencyRiskMember_documentation_en-US" xlink:label="lab_ck0000898745_ForeignCurrencyRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Foreign Currency Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000898745_ForeignCurrencyRiskMember" xlink:href="ck0000898745-20260825.xsd#ck0000898745_ForeignCurrencyRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000898745_ForeignCurrencyRiskMember" xlink:to="lab_ck0000898745_ForeignCurrencyRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000898745_DerivativesRiskForwardContractsFuturesAndSwapsRiskMember_label_en-US" xlink:label="lab_ck0000898745_DerivativesRiskForwardContractsFuturesAndSwapsRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivatives Risk, Forward Contracts, Futures, And Swaps Risk Member</link:label>
    <link:label id="lab_ck0000898745_DerivativesRiskForwardContractsFuturesAndSwapsRiskMember_documentation_en-US" xlink:label="lab_ck0000898745_DerivativesRiskForwardContractsFuturesAndSwapsRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Derivatives Risk, Forward Contracts, Futures, And Swaps Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000898745_DerivativesRiskForwardContractsFuturesAndSwapsRiskMember" xlink:href="ck0000898745-20260825.xsd#ck0000898745_DerivativesRiskForwardContractsFuturesAndSwapsRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000898745_DerivativesRiskForwardContractsFuturesAndSwapsRiskMember" xlink:to="lab_ck0000898745_DerivativesRiskForwardContractsFuturesAndSwapsRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000898745_BloombergUSAggregateIndexReflectsNoDeductionForFeesExpensesOrTaxesIndexMember_label_en-US" xlink:label="lab_ck0000898745_BloombergUSAggregateIndexReflectsNoDeductionForFeesExpensesOrTaxesIndexMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Bloomberg US Aggregate Index (reflects no deduction for fees, expenses, or taxes)</link:label>
    <link:label id="lab_ck0000898745_BloombergUSAggregateIndexReflectsNoDeductionForFeesExpensesOrTaxesIndexMember_documentation_en-US" xlink:label="lab_ck0000898745_BloombergUSAggregateIndexReflectsNoDeductionForFeesExpensesOrTaxesIndexMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Bloomberg US Aggregate Index (reflects no deduction for fees, expenses, or taxes)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000898745_BloombergUSAggregateIndexReflectsNoDeductionForFeesExpensesOrTaxesIndexMember" xlink:href="ck0000898745-20260825.xsd#ck0000898745_BloombergUSAggregateIndexReflectsNoDeductionForFeesExpensesOrTaxesIndexMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000898745_BloombergUSAggregateIndexReflectsNoDeductionForFeesExpensesOrTaxesIndexMember" xlink:to="lab_ck0000898745_BloombergUSAggregateIndexReflectsNoDeductionForFeesExpensesOrTaxesIndexMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000898745_S000024296Member_label_en-US" xlink:label="lab_ck0000898745_S000024296Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Multi-Sector Income Fund</link:label>
    <link:label id="lab_ck0000898745_S000024296Member_documentation_en-US" xlink:label="lab_ck0000898745_S000024296Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Multi-Sector Income Fund (formerly Diversified Income Fund, S000024296)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000898745_S000024296Member" xlink:href="ck0000898745-20260825.xsd#ck0000898745_S000024296Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000898745_S000024296Member" xlink:to="lab_ck0000898745_S000024296Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000898745_HighYieldSecuritiesRiskMember_label_en-US" xlink:label="lab_ck0000898745_HighYieldSecuritiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">High Yield Securities Risk Member</link:label>
    <link:label id="lab_ck0000898745_HighYieldSecuritiesRiskMember_documentation_en-US" xlink:label="lab_ck0000898745_HighYieldSecuritiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">High Yield Securities Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000898745_HighYieldSecuritiesRiskMember" xlink:href="ck0000898745-20260825.xsd#ck0000898745_HighYieldSecuritiesRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000898745_HighYieldSecuritiesRiskMember" xlink:to="lab_ck0000898745_HighYieldSecuritiesRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000898745_ForeignSecuritiesRiskMember_label_en-US" xlink:label="lab_ck0000898745_ForeignSecuritiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Foreign Securities Risk Member</link:label>
    <link:label id="lab_ck0000898745_ForeignSecuritiesRiskMember_documentation_en-US" xlink:label="lab_ck0000898745_ForeignSecuritiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Foreign Securities Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000898745_ForeignSecuritiesRiskMember" xlink:href="ck0000898745-20260825.xsd#ck0000898745_ForeignSecuritiesRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000898745_ForeignSecuritiesRiskMember" xlink:to="lab_ck0000898745_ForeignSecuritiesRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000898745_DerivativesRiskMember_label_en-US" xlink:label="lab_ck0000898745_DerivativesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivatives Risk Member</link:label>
    <link:label id="lab_ck0000898745_DerivativesRiskMember_documentation_en-US" xlink:label="lab_ck0000898745_DerivativesRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Derivatives Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000898745_DerivativesRiskMember" xlink:href="ck0000898745-20260825.xsd#ck0000898745_DerivativesRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000898745_DerivativesRiskMember" xlink:to="lab_ck0000898745_DerivativesRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000898745_PortfolioDurationRiskMember_label_en-US" xlink:label="lab_ck0000898745_PortfolioDurationRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Portfolio Duration Risk Member</link:label>
    <link:label id="lab_ck0000898745_PortfolioDurationRiskMember_documentation_en-US" xlink:label="lab_ck0000898745_PortfolioDurationRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Portfolio Duration Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000898745_PortfolioDurationRiskMember" xlink:href="ck0000898745-20260825.xsd#ck0000898745_PortfolioDurationRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000898745_PortfolioDurationRiskMember" xlink:to="lab_ck0000898745_PortfolioDurationRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000898745_C000071807Member_label_en-US" xlink:label="lab_ck0000898745_C000071807Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Multi-Sector Income Fund, Class A</link:label>
    <link:label id="lab_ck0000898745_C000071807Member_documentation_en-US" xlink:label="lab_ck0000898745_C000071807Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Multi-Sector Income Fund, Class A (formerly Diversified Income Fund, Class A), C000071807, PGBAX</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000898745_C000071807Member" xlink:href="ck0000898745-20260825.xsd#ck0000898745_C000071807Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000898745_C000071807Member" xlink:to="lab_ck0000898745_C000071807Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000898745_C000071805Member_label_en-US" xlink:label="lab_ck0000898745_C000071805Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Multi-Sector Income Fund, Institutional Class</link:label>
    <link:label id="lab_ck0000898745_C000071805Member_documentation_en-US" xlink:label="lab_ck0000898745_C000071805Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Multi-Sector Income Fund Institutional Class (formerly Diversified Income Fund, Institutional Class, C000071805, PGDIX</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000898745_C000071805Member" xlink:href="ck0000898745-20260825.xsd#ck0000898745_C000071805Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000898745_C000071805Member" xlink:to="lab_ck0000898745_C000071805Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000898745_BankLoansRiskMember_label_en-US" xlink:label="lab_ck0000898745_BankLoansRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Bank Loans Risk Member</link:label>
    <link:label id="lab_ck0000898745_BankLoansRiskMember_documentation_en-US" xlink:label="lab_ck0000898745_BankLoansRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Bank Loans Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000898745_BankLoansRiskMember" xlink:href="ck0000898745-20260825.xsd#ck0000898745_BankLoansRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000898745_BankLoansRiskMember" xlink:to="lab_ck0000898745_BankLoansRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000898745_USGovernmentSecuritiesRiskMember_label_en-US" xlink:label="lab_ck0000898745_USGovernmentSecuritiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">U.S. Government Securities Risk Member</link:label>
    <link:label id="lab_ck0000898745_USGovernmentSecuritiesRiskMember_documentation_en-US" xlink:label="lab_ck0000898745_USGovernmentSecuritiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">U.S. Government Securities Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000898745_USGovernmentSecuritiesRiskMember" xlink:href="ck0000898745-20260825.xsd#ck0000898745_USGovernmentSecuritiesRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000898745_USGovernmentSecuritiesRiskMember" xlink:to="lab_ck0000898745_USGovernmentSecuritiesRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000898745_SecuritizedProductsRiskMember_label_en-US" xlink:label="lab_ck0000898745_SecuritizedProductsRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Securitized Products Risk Member</link:label>
    <link:label id="lab_ck0000898745_SecuritizedProductsRiskMember_documentation_en-US" xlink:label="lab_ck0000898745_SecuritizedProductsRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Securitized Products Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000898745_SecuritizedProductsRiskMember" xlink:href="ck0000898745-20260825.xsd#ck0000898745_SecuritizedProductsRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000898745_SecuritizedProductsRiskMember" xlink:to="lab_ck0000898745_SecuritizedProductsRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000898745_PreferredSecuritiesRiskMember_label_en-US" xlink:label="lab_ck0000898745_PreferredSecuritiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Preferred Securities Risk Member</link:label>
    <link:label id="lab_ck0000898745_PreferredSecuritiesRiskMember_documentation_en-US" xlink:label="lab_ck0000898745_PreferredSecuritiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Preferred Securities Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000898745_PreferredSecuritiesRiskMember" xlink:href="ck0000898745-20260825.xsd#ck0000898745_PreferredSecuritiesRiskMember"/>
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    <link:label id="lab_ck0000898745_FloatingAndVariableRateSecuritiesRiskMember_label_en-US" xlink:label="lab_ck0000898745_FloatingAndVariableRateSecuritiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Floating And Variable Rate Securities Risk Member</link:label>
    <link:label id="lab_ck0000898745_FloatingAndVariableRateSecuritiesRiskMember_documentation_en-US" xlink:label="lab_ck0000898745_FloatingAndVariableRateSecuritiesRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Floating And Variable Rate Securities Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000898745_FloatingAndVariableRateSecuritiesRiskMember" xlink:href="ck0000898745-20260825.xsd#ck0000898745_FloatingAndVariableRateSecuritiesRiskMember"/>
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    <link:label id="lab_ck0000898745_CounterpartyRiskMember_label_en-US" xlink:label="lab_ck0000898745_CounterpartyRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Counterparty Risk Member</link:label>
    <link:label id="lab_ck0000898745_CounterpartyRiskMember_documentation_en-US" xlink:label="lab_ck0000898745_CounterpartyRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Counterparty Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000898745_CounterpartyRiskMember" xlink:href="ck0000898745-20260825.xsd#ck0000898745_CounterpartyRiskMember"/>
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    <link:label id="lab_ck0000898745_HedgingRiskMember_label_en-US" xlink:label="lab_ck0000898745_HedgingRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Hedging Risk Member</link:label>
    <link:label id="lab_ck0000898745_HedgingRiskMember_documentation_en-US" xlink:label="lab_ck0000898745_HedgingRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Hedging Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000898745_HedgingRiskMember" xlink:href="ck0000898745-20260825.xsd#ck0000898745_HedgingRiskMember"/>
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    <link:label id="lab_ck0000898745_C000071808Member_label_en-US" xlink:label="lab_ck0000898745_C000071808Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Multi-Sector Income Fund, Class C</link:label>
    <link:label id="lab_ck0000898745_C000071808Member_documentation_en-US" xlink:label="lab_ck0000898745_C000071808Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Multi-Sector Income Fund, Class C (formerly Diversified Income Fund, Class C, C000071808, PGDCX)</link:label>
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    <link:label id="lab_ck0000898745_SovereignDebtRiskMember_documentation_en-US" xlink:label="lab_ck0000898745_SovereignDebtRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Sovereign Debt Risk Member</link:label>
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    <link:label id="lab_ck0000898745_RedemptionAndLargeTransactionRiskMember_documentation_en-US" xlink:label="lab_ck0000898745_RedemptionAndLargeTransactionRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Redemption And Large Transaction Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000898745_RedemptionAndLargeTransactionRiskMember" xlink:href="ck0000898745-20260825.xsd#ck0000898745_RedemptionAndLargeTransactionRiskMember"/>
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    <link:label id="lab_ck0000898745_DerivativesRiskCurrencyContractsRiskMember_documentation_en-US" xlink:label="lab_ck0000898745_DerivativesRiskCurrencyContractsRiskMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Derivatives Risk, Currency Contracts Risk Member</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000898745_DerivativesRiskCurrencyContractsRiskMember" xlink:href="ck0000898745-20260825.xsd#ck0000898745_DerivativesRiskCurrencyContractsRiskMember"/>
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