Banana(Musa spp.)is one of the most important fruit crop worldwide,and plays a critical role in human diet and agricultural economies across tropical and subtropical regions,including China(Jiang et al.,2025;Wu et al....Banana(Musa spp.)is one of the most important fruit crop worldwide,and plays a critical role in human diet and agricultural economies across tropical and subtropical regions,including China(Jiang et al.,2025;Wu et al.,2025).However,its rapid softening severely limits shelf life,causing substantial economic losses during transport and storage.Recently,the enhanced shelf-life can be generated by compromising the key ripening regulators,such as RIN,but other fruit quality traits including flavor and color also can be impaired concurrently(Kitagawa et al.,2005).展开更多
通过液质联用方法检测健康和枯萎病发病香蕉的根系分泌物组成及含量并分析其差异组分,研究差异组分对香蕉枯萎病菌尖孢镰刀菌古巴专化型(Fusarium oxysporum f. sp. cubense)热带4号小种(Foc4)生长的影响。结果表明,枯萎病病情达3级的香...通过液质联用方法检测健康和枯萎病发病香蕉的根系分泌物组成及含量并分析其差异组分,研究差异组分对香蕉枯萎病菌尖孢镰刀菌古巴专化型(Fusarium oxysporum f. sp. cubense)热带4号小种(Foc4)生长的影响。结果表明,枯萎病病情达3级的香蕉,其根系分泌物中的半乳糖等6种糖类物质含量显著高于同期健康对照,莽草酸等13种有机酸、水杨酸等12种酚酸含量均同时显著高于初始和同期健康对照,而L–酪氨酸等3种氨基酸含量较初始和同期对照均减少,选择39种差异组分用于后续研究发现,Foc4对酚酸和有机酸的趋化半径高于氨基酸和糖类,且Foc4在酚酸中的繁殖数量、在有机酸和酚酸中的菌丝生长直径均高于阳性对照。相关性分析显示,香蕉根系分泌物含量增长率与Foc4趋化半径、繁殖数量和菌丝生长直径均呈正相关关系(P<0.05),表明Foc4侵染使香蕉根系分泌物增加了有利于病原菌生长的物质含量,为病原菌在香蕉根际定殖提供所需的营养物质。展开更多
基金supported by the Natural Science Foundation of China(Grant Nos.32172544,32441071)the special fund for scientific innovation strategy-construction of high level Academy of Agriculture Science(Grant No.R2023PY-JG003)+4 种基金the earmarked fund for CARS(Grant No.CARS-31-01)Guangdong Special Support Program(Grant No.NYLJ2024010)Guangdong S&T Program(Grant No.2025B0202070005)IAEA CRP D23033the Project from Guangzhou Municipal Science and Technology Bureau(2023B03J0991).
文摘Banana(Musa spp.)is one of the most important fruit crop worldwide,and plays a critical role in human diet and agricultural economies across tropical and subtropical regions,including China(Jiang et al.,2025;Wu et al.,2025).However,its rapid softening severely limits shelf life,causing substantial economic losses during transport and storage.Recently,the enhanced shelf-life can be generated by compromising the key ripening regulators,such as RIN,but other fruit quality traits including flavor and color also can be impaired concurrently(Kitagawa et al.,2005).
文摘通过液质联用方法检测健康和枯萎病发病香蕉的根系分泌物组成及含量并分析其差异组分,研究差异组分对香蕉枯萎病菌尖孢镰刀菌古巴专化型(Fusarium oxysporum f. sp. cubense)热带4号小种(Foc4)生长的影响。结果表明,枯萎病病情达3级的香蕉,其根系分泌物中的半乳糖等6种糖类物质含量显著高于同期健康对照,莽草酸等13种有机酸、水杨酸等12种酚酸含量均同时显著高于初始和同期健康对照,而L–酪氨酸等3种氨基酸含量较初始和同期对照均减少,选择39种差异组分用于后续研究发现,Foc4对酚酸和有机酸的趋化半径高于氨基酸和糖类,且Foc4在酚酸中的繁殖数量、在有机酸和酚酸中的菌丝生长直径均高于阳性对照。相关性分析显示,香蕉根系分泌物含量增长率与Foc4趋化半径、繁殖数量和菌丝生长直径均呈正相关关系(P<0.05),表明Foc4侵染使香蕉根系分泌物增加了有利于病原菌生长的物质含量,为病原菌在香蕉根际定殖提供所需的营养物质。
