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Start Over Creator Hu, Y. Language Multiple languages Subject 581 Subject chlorophyll

1. Effects of paclobutrazol on cultivars of Chinese bayberry (Myrica rubra) under salinity stress

Creator:
Hu, Y., Yu, W., Liu, T., Shafi, M., Song, L., Du, X., Huang, X., Yue, Y., and Wu, J.
Format:
print, bez média, and svazek
Type:
model:article and TEXT
Subject:
chlorofyl, fotosyntéza, chlorophyll, photosynthesis, antioxidační enzymy, poškození buněk, výměna plynu, voskovník, solný stres, antioxidative enzymes, cellular damage, gas exchange, paclobutrazol, Chinese bayberry, Myrica rubra, salinity stress, 2, and 581
Language:
Multiple languages
Description:
Salt stress is one of the most critical factors hindering the growth and development of plants. Paclobutrazol (PBZ) is widely used to minimize this problem in agriculture because it can induce salt stress tolerance in plants. This study investigated the effects of PBZ on salt tolerance of seedlings from two Chinese bayberry cultivars (i.e., Wangdao and Shenhong). Plants were treated with three salt concentrations (0, 0.2, and 0.4 % NaCl) and two PBZ concentrations (0 and 2.0 μmol L-1). Application of PBZ increased a relative water content, proline content, chlorophyll (a+b) content, and antioxidant enzyme activities in both cultivars, resulting in a better acclimation to salt stress and an increase in dry matter production. We concluded that PBZ ameliorated the negative effects of salt stress in Chinese bayberry seedlings., Y. Hu, W. Yu, T. Liu, M. Shafi, L. Song, X. Du, X. Huang, Y. Yue, J. Wu., and Obsahuje bibliografii
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

2. Inhibition of root respiration induces leaf senescence in Alhagi sparsifolia

Creator:
Tang, G.-L., Li, X.-Y., Lin, L.-S., Hu, Y., and Zeng, F.-J.
Format:
print, bez média, and svazek
Type:
model:article and TEXT
Subject:
obecná botanika, sacharidy, chlorofyl, general botany, carbohydrates, chlorophyll, girdling, phloem transport, photosynthetic pigment, 2, and 581
Language:
Multiple languages
Description:
Leaf senescence can be induced by numerous factors. In order to explore the relationship between root respiration and leaf senescence, we utilized different types of phloem girdling to control the root respiration of Alhagi sparsifolia and its physiological response. Our results showed that both girdling and inhibition of root respiration led to a decline of stomatal conductance, photosynthesis, transpiration rate, chlorophyll (Chl) a, Chl b, carotenoid (Car) content, Chl a/b, Chl/Car, water potential, and Chl a fluorescence, as well as to an increase of abscisic acid (ABA), proline, and malondialdehyde content in leaves and to upregulation of senescence-associated gene expression. Our present work implied that both inhibition of root respiration and girdling can induce leaf senescence. In comparison with phloem girdling, the leaf senescence caused by inhibition of root respiration was less significant. The reason for girdling-induced senescence was ABA and carbohydrate accumulation. Senescence induced by inhibition of root respiration occurred due to leaf water stress resulting from inhibition of water absorption., G.-L. Tang, X.-Y. Li, L.-S. Lin, Y. Hu, F.-J. Zeng., and Obsahuje seznam literatury
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public