南京林业大学学报（自然科学版）2024，Vol.48Issue(2)：97-104,8.DOI:10.12302/j.issn.1000-2006.202210034
黄连木变色期叶片色素变化规律及呈色机理
Changes in pigment and coloration mechanism of leaves during the discoloration period of Pistacia chinensis
摘要
Abstract
[Objective]The changes of physiological substances related to the discoloration period of the leaves of Pistacia chinensis in autumn were studied to reveal the regularity between leaf color and content.[Method]The experiment was conducted to quantify and analyze the changes in leaf color parameters,pigments,osmotic substances,total nitrogen and phosphorus contents and the key enzyme activities of P.chinensis.[Result]During the discoloration period,the contents of chlorophyll and carotenoid in leaves continuously decreased,the content of anthocyanins increased,and the leaves turned red.Anthocyanins in the leaves of P.chinensis showed extremely significantly positive correlations with a*values,the ratio of carotenoid to chlorophyll and anthocyanin to chlorophyll,soluble sugar,free amino acid,phenylalanine ammonialyase(PAL)and anthocyanidin synthase(ANS)(P＜0.01).Anthocyanins were positively correlated with dihydroflavonol-4-reductase(DFR)(P＜0.05).Anthocyanins were negatively correlated with nitrogen(N)(P＜0.05).Anthocyanins were extremely significantly negatively correlated with phosphorus(P)(P＜0.01).[Conclusion]The anthocyanin/chlorophyll ratio and anthocyanin content in the leaves during the autumn discoloration period of P.chinensis are the material basis for leaf reddening in the middle stage of discoloration.Soluble sugar content and PAL enzyme activity are the key factors affecting color.Mineral elements(nitrogen and phosphorus)content in the discoloration period was significantly reduced,promoting anthocyanin synthesis and affecting leaf color.关键词
黄连木/变色期/花青素/呈色机理Key words
Pistacia chinensis/discoloration period/anthocyanins/coloration mechanism分类
农业科技引用本文复制引用
许志钊,杨秀云,王祎琛,杜淑辉..黄连木变色期叶片色素变化规律及呈色机理[J].南京林业大学学报（自然科学版）,2024,48(2):97-104,8.基金项目
山西省基础研究计划项目(202103021224144) （202103021224144）
山西农业大学生物育种工程项目(YZGC138). （YZGC138）
