ROP(Rho-related GTPases from plants)蛋白是植物特有的一类小G蛋白,在植物信号转导方面起着重要作用,可以调控植物生长发育及逆境响应。综述了ROP蛋白的结构,在植物花粉管、根毛生长发育中的作用,在植物抵御低温、干旱、高盐、病虫害...ROP(Rho-related GTPases from plants)蛋白是植物特有的一类小G蛋白,在植物信号转导方面起着重要作用,可以调控植物生长发育及逆境响应。综述了ROP蛋白的结构,在植物花粉管、根毛生长发育中的作用,在植物抵御低温、干旱、高盐、病虫害中的作用,并对今后的研究方向进行了展望,以期为ROP蛋白在植物育种中的应用提供理论依据。展开更多
Polar auxin transport, which is required for the formation of auxin gradients and directional auxin flows that are critical for plant pattern formation, morphogenesis, and directional growth response to vectorial cues...Polar auxin transport, which is required for the formation of auxin gradients and directional auxin flows that are critical for plant pattern formation, morphogenesis, and directional growth response to vectorial cues, is mediated by polarized sub-cellular distribution of PIN-FORMED Proteins （PINs, auxin efflux carriers）, AUX1/AUXI-like proteins （auxin influx facilitators）, and multidrug resistance P-glycoproteins （MDR/PGP）. Polar localization of these proteins is controlled by both developmental and environmental cues. Recent studies have revealed cellular （endocytosis, transcytosis, and endosomal sorting and recycling） and molecular （PINOID kinase, protein phosphatase 2A） mechanisms underlying the polar distribution of these auxin transport proteins. Both TIR1-mediated auxin signaling and TIRl-independent auxinmediated endocytosis have been shown to regulate polar PIN localization and auxin flow, implicating auxin as a selforganizing signal in directing polar transport and directional flows.展开更多
文摘ROP(Rho-related GTPases from plants)蛋白是植物特有的一类小G蛋白,在植物信号转导方面起着重要作用,可以调控植物生长发育及逆境响应。综述了ROP蛋白的结构,在植物花粉管、根毛生长发育中的作用,在植物抵御低温、干旱、高盐、病虫害中的作用,并对今后的研究方向进行了展望,以期为ROP蛋白在植物育种中的应用提供理论依据。
文摘Polar auxin transport, which is required for the formation of auxin gradients and directional auxin flows that are critical for plant pattern formation, morphogenesis, and directional growth response to vectorial cues, is mediated by polarized sub-cellular distribution of PIN-FORMED Proteins （PINs, auxin efflux carriers）, AUX1/AUXI-like proteins （auxin influx facilitators）, and multidrug resistance P-glycoproteins （MDR/PGP）. Polar localization of these proteins is controlled by both developmental and environmental cues. Recent studies have revealed cellular （endocytosis, transcytosis, and endosomal sorting and recycling） and molecular （PINOID kinase, protein phosphatase 2A） mechanisms underlying the polar distribution of these auxin transport proteins. Both TIR1-mediated auxin signaling and TIRl-independent auxinmediated endocytosis have been shown to regulate polar PIN localization and auxin flow, implicating auxin as a selforganizing signal in directing polar transport and directional flows.
