The long non-coding RNA CARMA directs sucrose-responsive osmoregulation  

作　　者：Seungchul Lee Ildoo Hwang 

机构地区：[1]Department of Life Sciences,Pohang University of Science and Technology,Pohang 37673,Republic of Korea [2]Institute for Convergence Research and Education in Advanced Technology,Yonsei University,Incheon 21983,Republic of Korea

出　　处：《Molecular Plant》2024年第12期1803-1804,共2页分子植物（英文版）

基　　金：grant to I.H.from the New Breeding Technologies Development Program(project no.RS-2024-00322420);Rural Development Administration,Republic of Korea,and from a National Research Foundation of Korea grant funded by the Ministry of Science and ICT,Republic of Korea(project no.2020R1A2C3012750).

摘　　要：In plants,sucrose represents the primary form of photoassimilated carbon,serving as the central metabolite in plant growth and development.The phloem transports photoassimilated carbon,including sucrose,as well as amino acids,RNAs,and hormones from source tissues(e.g.,mature leaves)into sink tissues(e.g.,roots and reproductive organs)(Hardtke,2023).Phloem flow is driven by the difference of the hydrostatic pressure between source and sink(Knoblauch et al.,2016).This hydrostatic pressure in the intracellular region,known as turgor pressure,is generated from water uptake in response to the solute concentration(e.g.,ions and sugars)and affects cell volume.A previous study reported that CANALIZATION-RELATED RECEPTOR-LIKE KINASE(CANAR),a leucine-rich repeat receptor-like kinase,regulates the stele area without altering cell number,suggesting that CANAR affect cell volume(Goff et al.,2023).Cell volume in the stele area is largely dependent on osmoregulation,which is crucial for maintaining water status in plants under various environmental conditions,ranging from drought to flooding(Maurel and Nacry,2020).However,the mechanism by which CANAR regulates cell volume remains unclear.

关 键 词：ORGANS HYDROSTATIC SUGAR 

分 类 号：Q94[生物学—植物学]