By N.K. Srinivasa Rao, K.S. Shivashankara, R.H. Laxman
This ebook brings jointly fresh advances within the region of abiotic rigidity tolerance in quite a few greens, fruit plants, plantation plants and tuber plants. the most demanding situations to enhancing the productiveness of horticultural vegetation are the different sorts of abiotic stresses commonly because of weather switch on the neighborhood and worldwide point. warmth, drought, chilly and salinity are the foremost abiotic stresses that adversely impact progress and productiveness and will set off a sequence of morphological, physiological, biochemical and molecular alterations in a number of horticultural vegetation. to this point, there aren't any books masking horticultural crop-specific abiotic rigidity tolerance mechanisms and their administration. Addressing that hole, the booklet is split into 2 sections, the 1st of which highlights contemporary advances within the basic points of abiotic tension tolerance just like the position of hormones, reactive oxygen species, seed remedies, molecular mechanisms of warmth tolerance and heavy steel toxicity, whereas the second one specializes in the abiotic pressure tolerance mechanisms of assorted greens, fruit plants, plantation plants and tuber plants. It comprises entire discussions of fruit vegetation like mango, grapes, banana, litchi and arid region end result; greens vegetation like tomato, capsicum, onion and tuber vegetation; and plantation vegetation like coconut, areca nut, oil palm and black pepper. one of the ideas for plant rigidity survival, examples of either avoidance and tolerance correct to specific plants are tested intimately, supported by means of chosen accomplished case reports of growth. As such, the e-book bargains a beneficial source fitted to scientists and graduate scholars operating within the fields of crop development, genetic engineering, and the abiotic tension tolerance of horticultural vegetation.
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Extra info for Abiotic Stress Physiology of Horticultural Crops
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2014) reported that transgenic field-grown plants with downregulated ACC synthase enzyme activity yield higher under drought stress. Salt stress positively influences ethylene biosynthesis, which helps in promoting salt tolerance by enhancing Na/K homeostasis (Lockhart 2013). Yang et al. (2013) illustrated a key role for ethylene in salt tolerance by relating its ability to retain K+ rather than decreasing Na in roots and shoots. Likewise Jiang et al. (2013) reported that ethylene overproducing (eto1) mutant under salinity exhibits reduced root Na influx and low root stelar and xylem-sap Na concentrations, leading to restricted root-to-shoot delivery of Na+, along with high xylem-sap K+ concentrations.
Besides, IAA metabolism is also modulated by oxidative degradation of IAA through peroxidases induction under abiotic stress and also reactive oxygen species generated during stress (Kovtun et al. 2000). The salinity stress causes reduction in IAA in rice (Prakash and Prathapasenan 1990). However, gibberellic acid treatment during the salinity stress partly reduced the adverse effect of salinity on IAA levels. Dunlop and Binzel (1996) witnessed significant reduction in the IAA levels of tomato by salinity.
Abiotic Stress Physiology of Horticultural Crops by N.K. Srinivasa Rao, K.S. Shivashankara, R.H. Laxman