生态学杂志2024，Vol.43Issue(3)：701-708,8.DOI:10.13292/j.1000-4890.202403.040
极小种群野生植物黄梅秤锤树的光合生理特性
Photosynthetic characteristics of Sinojackia huangmeiensis,a species with extremely small population
摘要
Abstract
Sinojackia huangmeiensis,an endemic species with extremely small population in China,was listed as one of the national key protected wild plants.To investigate the response and acclimation of S.huangmeiensis to dif-ferent light environments,we selected plants in three habitats(gap,understory,and full sunlight habitats),and compared leaf phenotypic traits,photosynthetic characteristics and chlorophyll fluorescence parameters in different habitats.Compared to the full sunlight habitat,specific leaf area(SLA)of S.huangmeiensis was significantly high-er,while leaf thickness(LT)and dry matter content(LDMC)were significantly lower in gap and understory habi-tats.The maximum net photosynthetic rate(Pmax)and light saturation point(LSP)were the highest in the full sun-light habitat,while light compensation point(LCP)and dark respiration rate(Rd)were the lowest in the understo-ry habitat.The electron transport rate(ETR),the effective PS Ⅱ quantum yield[Y(Ⅱ)],photochemical quench-ing(qP)and non-photochemical quenching(NPQ)in gap and full sunlight habitats were higher than those in the understory habitat.Our results suggested that S.huangmeiensis can acclimate to the low light environment by reduc-ing LCP,Rd and NPQ,and acclimate to the high light environment by increasing LT,LDMC,LSP and NPQ.Additionally,S.huangmeiensis showed strong acclimation to different habitats,which was of great importance for population regeneration and maintenance,and thus provided new insights for artificial introduction.关键词
濒危植物/叶片表型性状/光合作用/叶绿素荧光Key words
endangered plant species/leaf phenotypic trait/photosynthesis/chlorophyll fluorescence引用本文复制引用
王世彤,宋帅帅,李杰华,杨腾,何艺琴,魏新增,江明喜..极小种群野生植物黄梅秤锤树的光合生理特性[J].生态学杂志,2024,43(3):701-708,8.基金项目
国家自然科学基金项目(31870510)资助. （31870510）
