树木衰老的分子与细胞标识研究进展OA

It was reported that there were twelve hallmarks of human aging,and research on model plants indicated that there were ten molecular and cellular signs accompanying the aging process of plants.Do pe-rennial trees have molecular and cellular hallmarks of aging?This is still an open question.This study summarizes the biological commonalities of trees,as well as the differences among trees,animals,and annu-al plants.It reviews the feature of individual tree aging and organ senescence,and focuses on the research progress of tree aging hallmarks.The following new perspectives and inspirations are formed:1)The con-cept'tree individual'was redefined from the perspectives of plant physiology and plant genetics.2)Aging was applied to the physiological and pathological changes and outcomes of individual trees as they grow older,while senescence to the physiological and pathological changes and outcomes of tree organs as they grow older;3)Two new hallmarks of tree aging were identified,e.g.chronic decline and dysbiosis,leading to the proposal of twelve molecular and cellular hallmarks of tree aging;4)New insights have been pro-posed on the disciplinary support,experimental system,and development direction of tree biogerontology research.The study of tree aging will be beneficial to reveal the longevity mechanism of ancient trees,ana-lyze the restoration principles of weakened ancient trees,enrich the theory of ancient and notable tree pro-tection,and support the practice of ancient tree protection.