福建农业学报2025，Vol.40Issue(1)：63-70,8.
不同红光与远红光比值对低温条件下茶树光合荧光特性及PIFs的影响
Effects of Red to Far-red Light Ratios on Photosynthetic Fluorescence Characteristics and PIFs of Tea Plants under Low Temperature Conditions
摘要
Abstract
[Objective]The physiological and molecular responses of tea plants under different red/far-red light ratio(R/FR)light environments under low-temperature conditions were explored to provide theoretical guidance for winter light supplementation in factory light facilities.[Method]'Guyuchun'was used as the material,and far red light treatment(FR,R/FR=4.1)and white light treatment(CK,R/FR=10.4)were set up to study the effects of different R/FR ratio light environments on gas exchange parameters,fluorescence parameters,and the expression of phytochrome interaction factors(PIFs)of tea plants under low-temperature conditions(10℃).[Result]The transpiration rate(Tr),net photosynthetic rate(Pn),and electron transport rate(ETR)of tea leaves decreased.The proportion of non-regulated energy dissipation quantum yield Y(NO)increased,the proportion of actual quantum yield(YⅡ)and regulated energy dissipation quantum yield Y(NPQ)decreased,and the important regulator of chlorophyll synthesis CsPIF3a gene was down-regulated.[Conclusion]The low ratio of R/FR light environment under low-temperature conditions weakens the photosynthetic electron transport capacity of tea leaves,inhibited the expression of chlorophyll synthesis related genes,reduces the photosynthetic capacity,and leaves are subjected to light damage.关键词
茶树/红光与远红光比值/光合荧光特性/光敏色素互作因子Key words
tea plant/red to far-red light ratio/photosynthetic fluorescence characteristics/phytochrome interacting factor分类
农业科学引用本文复制引用
肖富良,李解,唐敏,赖谦,翟秀明..不同红光与远红光比值对低温条件下茶树光合荧光特性及PIFs的影响[J].福建农业学报,2025,40(1):63-70,8.基金项目
重庆市永川区自然科学基金项目(2023yc-jckx20050) （2023yc-jckx20050）
重庆市农业科学院青年专项基金项目(KYLX20240500067) （KYLX20240500067）
重庆市现代农业产业技术体系"茶叶创新团队"项目(CQMAITS202308) （CQMAITS202308）
重庆市作物种质永川茶树资源圃项目(ZWZZ2020007) （ZWZZ2020007）
