The association of hormone signalling genes, transcription and changes in shoot anatomy during moso bamboo growth

Plant Biotechnology Journal
Long LiJian Gao

Abstract

Moso bamboo is a large, woody bamboo with the highest ecological, economic and cultural value of all the bamboo types and accounts for up to 70% of the total area of bamboo grown. However, the spatiotemporal variation role of moso bamboo shoot during growth period is still unclear. We found that the bamboo shoot growth can be divided into three distinct periods, including winter growth, early growth and late growth based on gene expression and anatomy. In the early growth period, lateral buds germinated from the top of the bamboo joint in the shoot tip. Intercalary meristems grew vigorously during the winter growth period and early growth period, but in the late growth period, mitosis in the intercalary meristems decreased. The expression of cell cycle-associated genes and the quantity of differentially expressed genes were higher in early growth than those in late growth, appearing to be influenced by hormonal concentrations. Gene expression analysis indicates that hormone signalling genes play key roles in shoot growth, while auxin signalling genes play a central role. In situ hybridization analyses illustrate how auxin signalling genes regulate apical dominance, meristem maintenance and lateral bud development. Our study pro...Continue Reading

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Citations

Mar 25, 2020·Journal of Experimental Botany·Bing ChengRobert J Henry
Mar 30, 2021·Plant Science : an International Journal of Experimental Plant Biology·Zezhong LinLiuyin Ma
Sep 29, 2021·Molecular Biology and Evolution·Guihua JinDe-Zhu Li

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Methods Mentioned

BETA
ELISA
dissecting
PCR

Software Mentioned

Primer
WGCNA
Cuffdiff
TopHat
Cytoscape
Cufflinks

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