Physiological Response Characteristics of Moso Bamboo under Drought Stress Based on Calcium Signal

This study aimed to evaluate the dominant factors of physiological responses of Phyllostachys edulis (Carrière) J. Houz to drought stress. The calcium (Ca2+) fluxes in root tips of P. edulis treated by polyethylene glycol were monitored via non-invasive micro-test technology. The physiological indexes of P. edulis under different soil moisture contents were determined. The regression model was built by curve fitting with the main physiological factors of P. edulis using PCA analysis. The variance contribution rates of the first three principal components of the physiological indicators were 75.0%, 13.3% and 5.0%. Calcium signal sensing protein kinase (CDPK) contents accounted for a larger contribution to the load of the first principal component. The contents of calcium signal sensor protein calmodulin (CaM) and calcium-dependent protein kinase (CDPK) increased. Meanwhile, drought induced strong Ca2+ influxes in root tips. Additionally, as the soil water content decreased, the contents of malondialdehyde (MDA), proline, betaine, jasmonic acid (JA) and abscisic acid (ABA) increased, and auxin (IAA) decreased in P. edulis leaves, strongly correlating with the CaM and CDPK contents. The calcium signal of P. edulis is activated and cascades plant physiological responses to drought stress. This study will provide physiological evidence for research regarding mechanisms of drought resistance of P. edulis.

[1]  Yeqing Ying,et al.  Effects of simulated nitrogen deposition on Phyllostachys edulis (Carr.) seedlings under different watering conditions: is seedling drought tolerance related to nitrogen metabolism? , 2020, Plant and Soil.

[2]  Ying Zhu,et al.  A calcium-dependent lipid binding protein, OsANN10, is a negative regulator of osmotic stress tolerance in rice. , 2020, Plant science : an international journal of experimental plant biology.

[3]  Jianfu Zhang,et al.  Mechanisms of reactive oxygen species in plants under drought stress , 2019, Chinese Science Bulletin.

[4]  F. Hartl,et al.  Rubisco condensate formation by CcmM in β-carboxysome biogenesis , 2019, Nature.

[5]  J. Schroeder,et al.  SnapShot: Abscisic Acid Signaling , 2017, Cell.

[6]  Zhang Mingru,et al.  Water potential with Phyllostachys edulis in its fast-growth periods , 2015 .

[7]  A. Nardini,et al.  Stomatal closure is induced by hydraulic signals and maintained by ABA in drought-stressed grapevine , 2015, Scientific Reports.

[8]  M. Ha-Duong,et al.  Climate Change 2014 , 2015 .

[9]  Jean-Pascal van Ypersele de Strihou.  Climate Change 2014 - Synthesis Report , 2015 .

[10]  Liu Xiaolon.  Ca~(2+) Signal Transduction and Its Regulation Role under Drought Stress in Plant , 2014 .

[11]  G. Krouk,et al.  ABA transport and transporters. , 2013, Trends in plant science.

[12]  Wei Tang,et al.  Transcription factor AtbZIP60 regulates expression of Ca2+-dependent protein kinase genes in transgenic cells , 2012, Molecular Biology Reports.

[13]  Xie Nan-nan.  Effects of drought stress on physiological characteristics of Phyllostachys edulis seedlings , 2011 .

[14]  M. Key.  Current progress in eco-physiology of root-sourced chemical signal in plant under drought stress , 2011 .

[15]  A. Gómez-Cadenas,et al.  Hormonal changes in papaya seedlings subjected to progressive water stress and re-watering , 2007, Plant Growth Regulation.

[16]  G. González-Aguilar,et al.  Methyl jasmonate treatments reduce chilling injury and activate the defense response of guava fruits. , 2004, Biochemical and biophysical research communications.

[17]  Zhao Bo.  Exogenous Betaine Improves the Growth and Photo-synthesis of Wheat Seedlings under Drought/Salt Stress , 2001 .

[18]  C. Shuo.  The Structure and Function of Calcium-dependent Protein Kinases in Plants , 2001 .

[19]  Liang Yongchao,et al.  Effects of drought, salt and chilling stresses on proline accumulation in shoots of rice seedlings. , 2000 .

[20]  P. Pilet,et al.  Level changes of jasmonic, abscisic, and indole-3yl-acetic acids in maize under desiccation stress , 1997 .

[21]  J E Mullet,et al.  Jasmonic acid distribution and action in plants: regulation during development and response to biotic and abiotic stress. , 1995, Proceedings of the National Academy of Sciences of the United States of America.