Abstract
Banana Fusarium wilt represents a considerable threat to the sustainable development of the global banana industry. Nonetheless, the regulatory mechanisms through which different nitrogen forms (nitrate, ammonium) and concentrations (low, normal) affect the growth and photosynthetic functions of banana seedlings following Foc TR4 infection are not yet fully elucidated. This study employed these nitrogen treatments to assess seedling growth indicators, chlorophyll fluorescence parameters, and light response curves both prior to and following Foc TR4 infection. The findings indicated that, before infection, ammonium nitrogen significantly enhanced root growth and increased leaf relative chlorophyll content (SPAD) and non-photochemical quenching (NPQ) values, whereas low-nitrogen conditions promoted biomass allocation to roots but inhibited maximum photochemical quantum yield of photosystem II (Fv/Fm). Post-infection, critical photosynthetic parameters such as SPAD value and Fv/Fm were significantly elevated in the nitrate nitrogen treatment compared to the ammonium nitrogen treatment, with the normal-nitrogen treatment yielding the most favorable results. Furthermore, Foc TR4 infection significantly reduced the leaf electron transport rate (ETR) across all treatments. In summary, nitrogen is integral to the modulation of seedling growth and stress resistance, primarily through its regulation of leaf photosynthetic apparatus efficiency, photoprotection mechanisms, and biomass allocation. These findings offer significant insights for formulating nitrogen management strategies aimed at the sustainable prevention and control of banana Fusarium wilt.
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Claims 8
Claim · model-written summary
Before infection, ammonium nitrogen significantly enhanced root growth of banana seedlings.
- Taxon
- banana seedlingst0
- Treatment
- ammonium nitrogene1
- Outcome
- root growthe1
- Direction
- enhancede1
- Qualifier
- before infectione1
Not reportedComparator
Verbatim
e1“before infection, ammonium nitrogen significantly enhanced root growth”
t0“Banana Seedlings Before and After Foc TR4 Infection”
Claim · model-written summary
Before infection, ammonium nitrogen increased leaf SPAD and non-photochemical quenching (NPQ) values of banana seedlings.
- Taxon
- banana seedlingst0
- Treatment
- ammonium nitrogene1
- Outcome
- leaf relative chlorophyll content (SPAD)e2
- Direction
- increasede2
- Qualifier
- before infectione1
Not reportedComparator
Verbatim
e1“before infection, ammonium nitrogen significantly enhanced root growth”
e2“increased leaf relative chlorophyll content (SPAD) and non-photochemical quenching (NPQ) values”
t0“Banana Seedlings Before and After Foc TR4 Infection”
Claim · model-written summary
Low-nitrogen conditions promoted biomass allocation to roots of banana seedlings.
- Taxon
- banana seedlingst0
- Treatment
- low-nitrogen conditionse3
- Outcome
- biomass allocation to rootse3
- Direction
- promotede3
Not reportedComparator
Verbatim
e3“low-nitrogen conditions promoted biomass allocation to roots”
t0“Banana Seedlings Before and After Foc TR4 Infection”
Claim · model-written summary
Low-nitrogen conditions inhibited maximum photochemical quantum yield of photosystem II (Fv/Fm) in banana seedlings.
- Taxon
- banana seedlingst0
- Treatment
- low-nitrogen conditionse3
- Outcome
- maximum photochemical quantum yield of photosystem II (Fv/Fm)e4
- Direction
- inhibitede4
Not reportedComparator
Verbatim
e3“low-nitrogen conditions promoted biomass allocation to roots”
e4“inhibited maximum photochemical quantum yield of photosystem II (Fv/Fm)”
t0“Banana Seedlings Before and After Foc TR4 Infection”
Claim · model-written summary
After Foc TR4 infection, SPAD value and Fv/Fm were significantly elevated in the nitrate nitrogen treatment compared with the ammonium nitrogen treatment.
- Taxon
- banana seedlingst0
- Treatment
- nitrate nitrogene5
- Interactor
- Foc TR4
_(38100977215).jpg?width=60)
Fusarium odoratissimumt0pathogen - Outcome
- SPAD value and Fv/Fme5
- Direction
- elevatede5
- Qualifier
- Post-infectione5
- Comparator
- ammonium nitrogen treatmente5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_(38100977215).jpg?width=500)
Verbatim
e5“Post-infection, critical photosynthetic parameters such as SPAD value and Fv/Fm were significantly elevated in the nitrate nitrogen treatment compared to the ammonium nitrogen treatment”
t0“Banana Seedlings Before and After Foc TR4 Infection”
Claim · model-written summary
After infection, the normal-nitrogen treatment gave the most favorable results in banana seedlings.
Verbatim
e6“with the normal-nitrogen treatment yielding the most favorable results”
t0“Banana Seedlings Before and After Foc TR4 Infection”
Claim · model-written summary
Foc TR4 infection significantly reduced leaf electron transport rate (ETR) in banana seedlings across all treatments.
- Taxon
- banana seedlingst0
- Treatment
- Foc TR4 infectione7
- Interactor
- Foc TR4Fusarium odoratissimume7pathogen
- Outcome
- leaf electron transport rate (ETR)e7
- Direction
- reducede7
- Qualifier
- across all treatmentse7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Foc TR4 infection significantly reduced the leaf electron transport rate (ETR) across all treatments”
t0“Banana Seedlings Before and After Foc TR4 Infection”
Claim · model-written summary
Nitrogen modulates seedling growth and stress resistance mainly through leaf photosynthetic apparatus efficiency, photoprotection and biomass allocation.
Verbatim
e0“nitrogen is integral to the modulation of seedling growth and stress resistance, primarily through its regulation of leaf photosynthetic apparatus efficiency, photoprotection mechanisms, and biomass allocation”
t0“Banana Seedlings Before and After Foc TR4 Infection”
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- positive
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nitrogen · growth · MusaPositive and negative results
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- negative
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See all 23 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.