Journal ArticleDOI
Brassinolide Application Improves the Drought Tolerance in Maize Through Modulation of Enzymatic Antioxidants and Leaf Gas Exchange
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TLDR
Exogenous application of brassinolide remarkably improved the gas exchange attributes, plant height, leaf area, cobs per plant, seedling dry weight both under drought and well-watered conditions.Abstract:
Brassinolides (BRs) are naturally occurring substances, which modulate plant growth and development events and have been known to improve the crop tolerance to abiotic stresses. In this study, possible role of exogenously applied brassinolide (BR) in alleviating the detrimental effects of drought in maize was evaluated in a rain-protected wire-house. Maize was subjected to drought at the start of tasseling for 6 days by withholding water application followed by foliar spray of BR (0.1 mg l−1) to assess the changes in growth, gas exchange, chlorophyll contents, protein, relative leaf water contents (RLWC), proline, malonialdehyde (MDA) and enzymatic antioxidants. Drought substantially reduced the maize growth in terms of plant height, leaf area and plant biomass. Moreover, substantial decrease in gas exchange attributes (net photosynthetic rate (A), transpiration rate (E), stomatal conductance (gs), water use efficiency (WUE), instantaneous water use efficiency (WUEi) and intercellular CO2 (Ci) was also recorded. However, exogenous application of BR remarkably improved the gas exchange attributes, plant height, leaf area, cobs per plant, seedling dry weight both under drought and well-watered conditions. BR-induced promotion in growth and physiological and metabolic activities were mediated through increased protein synthesis enabling maintenance of tissue water potential and activities of antioxidant enzymes lowering the lipid peroxidation under drought.read more
Citations
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Journal ArticleDOI
Crop Production under Drought and Heat Stress: Plant Responses and Management Options
Shah Fahad,Ali Ahsan Bajwa,Usman Nazir,Shakeel Ahmad Anjum,Ayesha Farooq,Ali Zohaib,Sehrish Sadia,Wajid Nasim,Steve W. Adkins,Shah Saud,Shah Saud,Muhammad Ihsan,Hesham F. Alharby,Chao Wu,Depeng Wang,Jianliang Huang,Jianliang Huang +16 more
TL;DR: A comprehensive account of conventional as well as modern approaches to deal with heat and drought stresses have been presented here and a side-by-side critical discussion on salient responses and management strategies for these two important abiotic stresses provides a unique insight into the phenomena.
Journal ArticleDOI
Morphological, physiological and biochemical responses of plants to drought stress
TL;DR: The ability and strategies of higher plants to respond and adapt to drought stress are focused on, including the critical roles of osmolyte accumulation under drought stress conditions.
Journal ArticleDOI
Brassinosteroids: Multidimensional Regulators of Plant Growth, Development, and Stress Responses.
Trevor M. Nolan,Nemanja Vukašinović,Nemanja Vukašinović,Derui Liu,Derui Liu,Eugenia Russinova,Eugenia Russinova,Yanhai Yin +7 more
TL;DR: Recent progress toward understanding theBR pathway is summarized, including BR perception and the molecular mechanisms of BR signaling, and how knowledge of the BR pathway is being applied to manipulate the growth and stress responses of crops is shown.
Book ChapterDOI
Drought stress in plants: an overview
Muhammad Farooq,Muhammad Farooq,Muhammad Farooq,Mubshar Hussain,Mubshar Hussain,Abdul Wahid,Kadambot H. M. Siddique,Kadambot H. M. Siddique +7 more
TL;DR: An overview of plant drought stress, its effects on plants’ resistance mechanisms and management strategies to cope with drought stress is provided.
Journal ArticleDOI
Drought Induced Changes in Growth, Osmolyte Accumulation and Antioxidant Metabolism of Three Maize Hybrids.
Shakeel Ahmad Anjum,Umair Ashraf,Mohsin Tanveer,Imran Khan,Saddam Hussain,Babar Shahzad,Ali Zohaib,Farhat Abbas,Muhammad Farrukh Saleem,Iftikhar Ali,Long C Wang +10 more
TL;DR: Drought-induced osmolyte accumulation and strong enzymatic and non-enzymatic defense systems prevented the severe damage in Dong Dan 80; nevertheless, negative effects of drought stress were more prominent in Run Nong 35.
References
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Journal ArticleDOI
A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein-dye binding
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Copper enzymes in isolated chloroplasts. polyphenoloxidase in beta vulgaris
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Journal ArticleDOI
Rapid determination of free proline for water-stress studies
TL;DR: In this article, a simple colorimetric determination of proline in the 0.1 to 36.0 μmoles/g range of fresh weight leaf material was presented.
Journal ArticleDOI
Roles of glycine betaine and proline in improving plant abiotic stress resistance
Muhammad Ashraf,Majid R. Foolad +1 more
TL;DR: In this review article, numerous examples of successful application of these compounds to improve plant stress tolerance are presented and a better understanding of the mechanisms of action of exogenously applied GB and proline is expected to aid their effective utilization in crop production in stress environments.
Journal ArticleDOI
Plant drought stress: effects, mechanisms and management
Muhammad Farooq,Muhammad Farooq,Abdul Wahid,Nobuya Kobayashi,Daisuke Fujita,Shahzad M. A. Basra +5 more
TL;DR: The effects of drought stress on the growth, phenology, water and nutrient relations, photosynthesis, assimilate partitioning, and respiration in plants, and the mechanism of drought resistance in plants on a morphological, physiological and molecular basis are reviewed.
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