Methyl Jasmonate and Brassinosteroids: Emerging Plant Growth Regulators in Plant Abiotic Stress Tolerance and Environmental Changes

2021 ◽  
pp. 173-195
Author(s):  
Haifa Abdulaziz S. Alhaithloul ◽  
Mona H. Soliman
Keyword(s):  
Abiotic Stress ◽  
Plant Growth ◽  
Methyl Jasmonate ◽  
Stress Tolerance ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Environmental Changes ◽  
Abiotic Stress Tolerance ◽  
Plant Abiotic Stress

Roles of Nitric Oxide in Conferring Multiple Abiotic Stress Tolerance in Plants and Crosstalk with Other Plant Growth Regulators

2021 ◽  
Author(s):  
Rajesh Kumar Singhal ◽  
Hanuman Singh Jatav ◽  
Tariq Aftab ◽  
Saurabh Pandey ◽  
Udit Nandan Mishra ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Abiotic Stress ◽  
Plant Growth ◽  
Stress Tolerance ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Abiotic Stress Tolerance

An Insight into the Role of Plant Growth Regulators in Stimulating Abiotic Stress Tolerance in Some Medicinally Important Plants

2021 ◽  
pp. 75-100
Author(s):  
Sadaf Choudhary ◽  
Andleeb Zehra ◽  
Mohammad Mukarram ◽  
M. Naeem ◽  
M. Masroor A. Khan ◽  
...  
Keyword(s):  
Abiotic Stress ◽  
Plant Growth ◽  
Stress Tolerance ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Abiotic Stress Tolerance ◽  
Insight Into

scholarly journals The Effects of Plant-Associated Bacterial Exopolysaccharides on Plant Abiotic Stress Tolerance

Metabolites ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 337
Author(s):  
Rafael J. L. Morcillo ◽  
Maximino Manzanera
Keyword(s):  
Heavy Metal ◽  
Abiotic Stress ◽  
Plant Growth ◽  
Stress Tolerance ◽  
Abiotic Stresses ◽  
Abiotic Stress Tolerance ◽  
Plant Growth Promoting Rhizobacteria ◽  
Plant Growth Promoting ◽  
Microbe Interactions ◽  
Plant Abiotic Stress

Plant growth-promoting rhizobacteria (PGPR) are beneficial soil microorganisms that can stimulate plant growth and increase tolerance to biotic and abiotic stresses. Some PGPR are capable of secreting exopolysaccharides (EPS) to protect themselves and, consequently, their plant hosts against environmental fluctuations and other abiotic stresses such as drought, salinity, or heavy metal pollution. This review focuses on the enhancement of plant abiotic stress tolerance by bacterial EPS. We provide a comprehensive summary of the mechanisms through EPS to alleviate plant abiotic stress tolerance, including salinity, drought, temperature, and heavy metal toxicity. Finally, we discuss how these abiotic stresses may affect bacterial EPS production and its role during plant-microbe interactions.

scholarly journals Polyamines: Small Amines with Large Effects on Plant Abiotic Stress Tolerance

Cells ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 2373
Author(s):  
Rubén Alcázar ◽  
Milagros Bueno ◽  
Antonio F. Tiburcio
Keyword(s):  
Abiotic Stress ◽  
Stress Tolerance ◽  
Environmental Changes ◽  
Genetic Manipulation ◽  
Abiotic Stress Tolerance ◽  
Seed Priming ◽  
Crop Plants ◽  
Plant Responses ◽  
Plant Tolerance ◽  
Plant Abiotic Stress

In recent years, climate change has altered many ecosystems due to a combination of frequent droughts, irregular precipitation, increasingly salinized areas and high temperatures. These environmental changes have also caused a decline in crop yield worldwide. Therefore, there is an urgent need to fully understand the plant responses to abiotic stress and to apply the acquired knowledge to improve stress tolerance in crop plants. The accumulation of polyamines (PAs) in response to many abiotic stresses is one of the most remarkable plant metabolic responses. In this review, we provide an update about the most significant achievements improving plant tolerance to drought, salinity, low and high temperature stresses by exogenous application of PAs or genetic manipulation of endogenous PA levels. We also provide some clues about possible mechanisms underlying PA functions, as well as known cross-talks with other stress signaling pathways. Finally, we discuss about the possible use of PAs for seed priming to induce abiotic stress tolerance in agricultural valuable crop plants.

Allantoin: Emerging Role in Plant Abiotic Stress Tolerance

2021 ◽  
Author(s):  
Harmeet Kaur ◽  
Soni Chowrasia ◽  
Vikram Singh Gaur ◽  
Tapan Kumar Mondal
Keyword(s):  
Abiotic Stress ◽  
Stress Tolerance ◽  
Abiotic Stress Tolerance ◽  
Plant Abiotic Stress

scholarly journals Down-Regulation of SlGRAS10 in Tomato Confers Abiotic Stress Tolerance

Genes ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 623
Author(s):  
Sidra Habib ◽  
Yee Yee Lwin ◽  
Ning Li
Keyword(s):  
Salt Stress ◽  
Abiotic Stress ◽  
Plant Growth ◽  
Stress Tolerance ◽  
Abiotic Stresses ◽  
Abiotic Stress Tolerance ◽  
Functional Characterization ◽  
Flavonoid Biosynthesis ◽  
Ros Scavenging ◽  
Down Regulation

Adverse environmental factors like salt stress, drought, and extreme temperatures, cause damage to plant growth, development, and crop yield. GRAS transcription factors (TFs) have numerous functions in biological processes. Some studies have reported that the GRAS protein family plays significant functions in plant growth and development under abiotic stresses. In this study, we demonstrated the functional characterization of a tomato SlGRAS10 gene under abiotic stresses such as salt stress and drought. Down-regulation of SlGRAS10 by RNA interference (RNAi) produced dwarf plants with smaller leaves, internode lengths, and enhanced flavonoid accumulation. We studied the effects of abiotic stresses on RNAi and wild-type (WT) plants. Moreover, SlGRAS10-RNAi plants were more tolerant to abiotic stresses (salt, drought, and Abscisic acid) than the WT plants. Down-regulation of SlGRAS10 significantly enhanced the expressions of catalase (CAT), peroxidase (POD), and superoxide dismutase (SOD) to reduce the effects of reactive oxygen species (ROS) such as O2− and H2O2. Malondialdehyde (MDA) and proline contents were remarkably high in SlGRAS10-RNAi plants. Furthermore, the expression levels of chlorophyll biosynthesis, flavonoid biosynthesis, and stress-related genes were also enhanced under abiotic stress conditions. Collectively, our conclusions emphasized the significant function of SlGRAS10 as a stress tolerate transcription factor in a certain variety of abiotic stress tolerance by enhancing osmotic potential, flavonoid biosynthesis, and ROS scavenging system in the tomato plant.

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