与阿贝尔抗衰老相关的生理和分子特征。

Physiological and molecular characteristics associated with the anti-senescence in Abel.

作者信息

Zhang Z, Xu Y M, He Z L, Liu C X, Wang R, Wang X N, Peng Y H, Chen L S, Peng S F, Ma L, Li Z G, Tang W, Chen Y Z, Chen J, Yang X H

机构信息

Hunan Academy of Forestry, National Research Center of Oil-tea Engineering Technology, 410004 Changsha, China.

Mid-Florida Research and Education Center, Department of Environmental Horticulture, Institute of Food and Agricultural Science, University of Florida, 32703 Apopka, USA.

出版信息

Photosynthetica. 2024 Feb 5;62(1):102-111. doi: 10.32615/ps.2024.003. eCollection 2024.

DOI:10.32615/ps.2024.003

PMID:39650640

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11609776/

Abstract

This study analyzed physiological and molecular characteristics associated with the resistance to aging or anti-senescence in Abel. Trees over 100 years old (ancient trees) were compared with those about 30 years old (mature trees). Total chlorophylls, chlorophyll / ratio, and hydrogen peroxide concentrations in ancient tree leaves were significantly higher than in their counterparts. Significantly higher activities of superoxide dismutase, peroxidase, and catalase were detected in ancient tree leaves. Nine Chl /-binding protein genes, 15 antioxidant enzyme genes, 21 hormone-related genes, and 301 stress-related genes were upregulated, and 42 protein-degradation genes were downregulated in ancient tree leaves. By increasing chlorophyll content and antioxidant enzyme activities and regulating the ageing-related genes expression, ancient leaves maintained remarkable vitality. Although further research is needed, our study may shed some light on how ancient trees can resist ageing and sustain their healthy growth.

摘要

本研究分析了与阿贝尔抗老化或抗衰老相关的生理和分子特征。将树龄超过100年的古树与树龄约30年的成熟树进行了比较。古树叶片中的总叶绿素、叶绿素/比值和过氧化氢浓度显著高于成熟树。在古树叶片中检测到超氧化物歧化酶、过氧化物酶和过氧化氢酶的活性显著更高。9个叶绿素结合蛋白基因、15个抗氧化酶基因、21个激素相关基因和301个胁迫相关基因在古树叶片中上调，42个蛋白质降解基因下调。通过增加叶绿素含量和抗氧化酶活性以及调节衰老相关基因的表达，古树叶片保持了显著的活力。尽管还需要进一步研究，但我们的研究可能为古树如何抵抗衰老并维持其健康生长提供一些线索。