文献类型：期刊文献

英文题名：Proteomic reprogramming underlying anatomical and physiological characteristics of poplar wood in acclimation to changing light and nitrogen availabilities

作者：Lu, Yan[1,2,3] Deng, Shurong[3] Wu, Jiangting[3] Li, Hong[4] Zhou, Jing[3] Shi, Wenguang[3] Fayyaz, Payam[5] Luo, Zhi-Bin[1,3,6]

第一作者：Lu, Yan

通信作者：Luo, ZB[1];Luo, ZB[2];Luo, ZB[3]

机构：[1]Chinese Acad Forestry Yellow River Delta, Comprehens Expt Ctr, Dongying 257000, Shandong, Peoples R China;[2]Jiangsu Prov & Chinese Acad Sci, Nanjing Bot Garden Mem Sun Yat Sen, Inst Bot, Jiangsu Key Lab Res & Utilizat Plant Resources, Nanjing 210014, Peoples R China;[3]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China;[4]Chinese Acad Forestry, Postgrad Sch, Beijing 100091, Peoples R China;[5]Univ Yasuj, Agr & Nat Resources Fac, Forest Range & Watershed Management Dept, Yasuj 7591963179, Iran;[6]Chinese Acad Forestry, Inst Ecol Conservat & Restorat, Beijing 100091, Peoples R China

年份：2025

卷号：121

期号：3

外文期刊名：PLANT JOURNAL

收录：;EI(收录号：20250617833647);Scopus(收录号：2-s2.0-85217070063);WOS:【SCI-EXPANDED(收录号:WOS:001414090900001)】；

基金：The platform of the facilities from the State Key Laboratory of Tree Genetics and Breeding is acknowledged. This work was jointly supported by the Key Research and Development Program of Shandong Province (Grant no. 2023CXPT026) and the National Natural Science Foundation of China (Grant Nos. 32371841, 32371826 and 32371916).

语种：英文

外文关键词：secondary growth; secondary xylem; Populus; proteome; light; nitrogen

摘要：To explore the proteomic regulation that underlies the physiological, anatomical, and chemical characteristics of wood in acclimation to changing light and nitrogen (N), saplings of Populus x canescens were treated with control or high irradiance in combination with low, control or high N for 4 months. High irradiance led to elevated levels of starch, sucrose, glucose, and fructose, decreased concentrations of ammonium, nitrate, most amino acids and total N, wider xylem, more xylem cell layers, narrower vessel lumina, longer fiber cells, greater fiber wall thickness, and more cellulose and hemicellulose but less lignin deposition in poplar wood. Limiting N resulted in increased levels of starch and sucrose, reduced levels of glucose, fructose, ammonium, nitrate, amino acids and total N, narrower xylem, fewer xylem cell layers, reduced vessel lumen diameter, thicker fiber walls, and less cellulose and more hemicellulose and lignin accumulation, whereas high N had the opposite effects on poplar wood. Correspondingly, numerous differentially abundant proteins, which are related mainly to the metabolism of carbohydrates and amino acids, cell division and expansion, and deposition of secondary cell walls, such as sucrose synthase 6 (SUS6), cell division cycle protein 48 (CDC48) and laccases (LACs), were identified in poplar cambiums in response to changes in light intensity and N availability. These results suggest that proteomic relays play essential roles in regulating the physiological characteristics and anatomical and chemical properties of poplar wood in acclimation to changing light and N availabilities.