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Ripening and rot:How ripening processes influence disease susceptibility in fleshy fruits

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Fleshy fruits become more susceptible to pathogen infection when they ripen;for example,changes in cell wall properties related to softening make it easier for pathogens to infect fruits.The need for high-quality fruit has driven extensive research on improving pathogen resistance in important fruit crops such as tomato(Solanum lycopersicum).In this review,we summarize current progress in un-derstanding how changes in fruit properties during ripening affect infection by pathogens.These changes affect physical barriers that limit pathogen entry,such as the fruit epidermis and its cuticle,along with other defenses that limit pathogen growth,such as preformed and induced defense compounds.The plant immune system also pro-tects ripening fruit by recognizing pathogens and initiating defense responses involving reactive oxygen species production,mitogen-activated protein kinase signaling cascades,and jasmonic acid,salicylic acid,ethylene,and abscisic acid signaling.These phytohormones regulate an in-tricate web of transcription factors(TFs)that activate resistance mechanisms,including the expression of pathogenesis-related genes.In tomato,ripening regulators,such as RIPENING INHIBITOR and NON_RIPENING,not only regu-late ripening but also influence fruit defenses against pathogens.Moreover,members of the ETHYLENE RESPONSE FACTOR(ERF)family play pivotal and distinct roles in ripening and defense,with different members being regulated by different phytohormones.We also discuss the interaction of ripening-related and defense-related TFs with the Mediator transcription complex.As the ripening processes in climac-teric and non-climacteric fruits share many sim-ilarities,these processes have broad applica-tions across fruiting crops.Further research on the individual contributions of ERFs and other TFs will inform efforts to diminish disease sus-ceptibility in ripe fruit,satisfy the growing de-mand for high-quality fruit and decrease food waste and related economic losses.

fleshy fruitpathogenphytohormonesripeningtranscription factors

Shan Li、Yu Zhao、Pan Wu、Donald Grierson、Lei Gao

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State Key Laboratory of Plant Diversity and Specialty Crops,Wuhan Botanical Garden,Chinese Academy of Sciences,Wuhan 430074,China

University of Chinese Academy of Sciences,Beijing 100049,China

Plant and Crop Sciences Division,School of Biosciences,University of Nottingham,Sutton Bonington Campus,Loughborough,LE12 5RD,UK

Hubei Hongshan Laboratory,Wuhan 430070,China

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Fund of Hubei ProvinceFoundation of Wuhan Botanical Garden,Chinese Academy of SciencesNational Natural Science Foundation of ChinaScience Fund for Creative Research Groups of the Natural Science Foundation of Hubei Province

32272393320017502022CFB312321703952024AFA035

2024

10.1111/jipb.13739

植物学报(英文版)
中国植物学会

植物学报(英文版)

CSTPCD
影响因子：0.921
ISSN：1672-9072
年,卷(期)：2024.66(9)
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