More insights into bamboo shoot degeneration
- 1 December 2020
- journal article
- research article
- Published by Pakistan Journal of Botany in Pakistan Journal of Botany
- Vol. 53 (3), 1065-1072
- https://doi.org/10.30848/pjb2021-3(15)
Abstract
Bamboo shoot degeneration is a widespread phenomenon that can lead to bamboo forest loss and impaired sustainable management. However, little is known about the mechanisms of bamboo shoot degeneration. In this study, changes of morphology, anatomy and endogenous hormones were determined and analyzed at different degenerating stages of Phyllostachys edulis ?Pachyloen? shoot. The degeneration process was classified into different stages based on morphological changes of bamboo shoots. The stages were used as a basis for light microscopy study on the structure of the cells and enzyme-linked immunosorbent assay on the endogenous hormones. The observations indicated that the absence of guttation was the earliest and most remarkable feature of degenerating shoots with the cessation of height growth, followed by gradually withered sheaths and yellowed shoot bodies. A comprehensive judgement criterion was provided including morphological features and nutritional components. Anatomical analysis showed both cellular protection changes, such as cell wall relaxation and increased silica cells which might be the caused by water deficit, and senescence changes, like condensed and degraded nuclei in degenerating shoots. Furthermore, not only the contents of endogenous hormones but also ratios of growth-promoting hormones to ABA in both the whole bodies and different growing regions were remarkably different between the degenerating and normal shoot, which indicates that ABA accumulation might be induce and promote the degeneration of bamboo shoot. In addition, starch grains degradation increased, which might accelerate the degeneration of bamboo shoots. These findings reveal that bamboo shoot degeneration is a complicated process including senescence activities and stress response, which provides new insights into the mechanisms of bamboo shoot degeneration.Keywords
This publication has 13 references indexed in Scilit:
- ABA receptor PYL9 promotes drought resistance and leaf senescenceProceedings of the National Academy of Sciences of the United States of America, 2016
- Genetic and Physiological Controls of Growth under Water DeficitPlant Physiology, 2014
- GuttationPublished by Elsevier BV ,2014
- Guttation: Quantification, Microbiology and Implications for PhytopathologyPublished by Springer Science and Business Media LLC ,2013
- Senescence, ageing and death of the whole plantNew Phytologist, 2012
- An ABA‐regulated and Golgi‐localized protein phosphatase controls water loss during leaf senescence in ArabidopsisThe Plant Journal, 2011
- Is the onset of senescence in leaf cells of intact plants due to low or high sugar levels?Journal of Experimental Botany, 2008
- Water-deficit stress-induced anatomical changes in higher plantsComptes Rendus Biologies, 2008
- Comparison between conventional indirect competitive enzyme-linked immunosorbent assay (icELISA) and simplified icELISA for small moleculesAnalytica Chimica Acta, 2006
- The role of sugars in integrating environmental signals during the regulation of leaf senescenceJournal of Experimental Botany, 2005