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SnRK1a1, a new player in the sucrose-Opaque2 network during endosperm filling

Molecular Plant 2024年第8期17卷 1172-1174页

作者： kelly mayrink balmant Marcio F.R.Resende Jr. Horticultural Sciences Department University of FloridaGainesvilleFLUSA

Maize(Zea mays)endosperm is an important food source for humans and *** addition,it is considered an excellent model for research on seed development because of its relatively large size for both embryo and endosperm compared to those of other crop species,such as rice(Oryza sativa)and wheat(Triticum aestivum).After double fertilization,early maize endosperm development includes three stages:(i)a multinucleate coenocyte stage;(i)a cellularization stage,in which the cellular endosperm is formed;and(ii)a stage of differentiation into distinct *** early differentiation,four major cell types with specific functions differentiate within the endosperm:starchy endosperm,aleurone layer,basal endosperm transfer layer(BETL),and embryo surrounding *** subaleurone,conducting zone,basal intermediate zone,and endosperm adjacent to scutellum arise in late differentiation(Sabelli and Larkins 2009).After the main cell types are established,maize endosperm undergoes intensive cell proliferation,which marks the transition to the endosperm-filling *** the endosperm-flling stage,the maternal sucrose products are transported to seeds through the BETL region,where they will act as the main carbon substrate for storage products such as starch and proteins(Chen et al.,2023).In fact,the endosperm of maize seeds accounts for approximately 90%of the total grain weight,serving as an important nutrient reservoir(Flint-Garcia et al.,2009).

关键词： endosperm reservoir Flint

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Redox proteomics of tomato in response to Pseudomonas syringae infection

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Horticulture Research 2015年第1期2卷 103-114页

作者： kelly mayrink balmant Jennifer Parker Mi-Jeong Yoo Ning Zhu Craig Dufresne Sixue Chen Department of Biology Genetics InstituteUniversity of FloridaGainesvilleFLUSA Plant Molecular and Cellular Biology Program University of FloridaGainesvilleFLUSA Thermo Fisher Scientific 1400 Northpoint ParkwayWest Palm BeachFLUSA Interdisciplinary Center for Biotechnology Research University of FloridaGainesvilleFLUSA

Unlike mammals with adaptive immunity,plants rely on their innate immunity based on pattern-triggered immunity(PTI)and effector-triggered immunity(ETI)for pathogen *** oxygen species,known to play crucial roles in PTI and ETI,can perturb cellular redox homeostasis and lead to changes of redox-sensitive proteins through modification of cysteine sulfhydryl *** redox regulation of protein functions has emerged as an important mechanism in several biological processes,little is known about redox proteins and how they function in PTI and *** this study,cysTMT proteomics technology was used to identify similarities and differences of protein redox modifications in tomato resistant(PtoR)and susceptible(prf3)genotypes in response to Pseudomonas syringae pv tomato(Pst)*** addition,the results of the redox changes were compared and corrected with the protein level changes.A total of 90 potential redox-regulated proteins were identified with functions in carbohydrate and energy metabolism,biosynthesis of cysteine,sucrose and brassinosteroid,cell wall biogenesis,polysaccharide/starch biosynthesis,cuticle development,lipid metabolism,proteolysis,tricarboxylic acid cycle,protein targeting to vacuole,and oxidation–*** inventory of previously unknown protein redox switches in tomato pathogen defense lays a foundation for future research toward understanding the biological significance of protein redox modifications in plant defense responses.

关键词： immunity metabolism modification

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