Leaf anatomy and ultrastructure in senescing ancient tree, Platycladus orientalis L. (Cupressaceae).

ABSTRACT: Platycladus orientalis L. (Cupressaceae) has a lifespan of thousands of years. Ancient trees have very high scientific, economic and cultural values. The senescence of ancient trees is a new research area but is poorly understood. Leaves are the primary and the most sensitive organ of a tree. To understand leaf structural response to tree senescence in ancient trees, experiments investigating the morphology, anatomy and ultrastructure were conducted with one-year leaves of ancient P. orientalis (ancient tree >2,000 years) at three different tree senescent levels (healthy, sub-healthy and senescent) at the world's largest planted pure forest in the Mausoleum of Yellow Emperor, Shaanxi Province, China. Observations showed that leaf structure significantly changed with the senes

SUBMITTER: Zhou Q 

PROVIDER: S-EPMC6462394 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature