Root system architecture, physiological analysis and dynamic transcriptomics unravel the drought-responsive traits in rice genotypes

Tiwari, Poonam; Srivastava, Dipali; Chauhan, Abhishek; Indoliya, Yuvraj; Singh, Pradyumna Kumar; Tiwari, Shalini; Fatima, Touseef; Mishra, Shaunak; Dwivedi, Sanjay; Agarwal, Lalit; Singh, Poonam; Asif, Mehar Hasan; Tripathi, Rudra Deo; Shirke, Pramod Arvind; Chakrabarty, Debasis; Chauhan, Puneet Singh; Nautiyal, Chandra Shekhar

doi:10.1016/j.ecoenv.2020.111252

Cited by 43 publications

(22 citation statements)

References 65 publications

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“…These structures reduce the leaf temperature by increasing the rate of light reflection in the leaf and also by adding another extra layer of resistance to the water loss. Hence the rate of water loss through leaf transpiration is reduced [78]. However, it is broadly accepted that changes in the root system, including root size, density, length, proliferation, expansion and growth rate, represent the main strategy for drought-tolerant plants to cope against water deficits [79].…”

Section: Avoidance and Tolerance Mechanismsmentioning

confidence: 99%

Drought Stress Impacts on Plants and Different Approaches to Alleviate Its Adverse Effects

Seleiman

Al-Suhaibani

Ali

et al. 2021

Plants

678

299

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Drought stress, being the inevitable factor that exists in various environments without recognizing borders and no clear warning thereby hampering plant biomass production, quality, and energy. It is the key important environmental stress that occurs due to temperature dynamics, light intensity, and low rainfall. Despite this, its cumulative, not obvious impact and multidimensional nature severely affects the plant morphological, physiological, biochemical and molecular attributes with adverse impact on photosynthetic capacity. Coping with water scarcity, plants evolve various complex resistance and adaptation mechanisms including physiological and biochemical responses, which differ with species level. The sophisticated adaptation mechanisms and regularity network that improves the water stress tolerance and adaptation in plants are briefly discussed. Growth pattern and structural dynamics, reduction in transpiration loss through altering stomatal conductance and distribution, leaf rolling, root to shoot ratio dynamics, root length increment, accumulation of compatible solutes, enhancement in transpiration efficiency, osmotic and hormonal regulation, and delayed senescence are the strategies that are adopted by plants under water deficit. Approaches for drought stress alleviations are breeding strategies, molecular and genomics perspectives with special emphasis on the omics technology alteration i.e., metabolomics, proteomics, genomics, transcriptomics, glyomics and phenomics that improve the stress tolerance in plants. For drought stress induction, seed priming, growth hormones, osmoprotectants, silicon (Si), selenium (Se) and potassium application are worth using under drought stress conditions in plants. In addition, drought adaptation through microbes, hydrogel, nanoparticles applications and metabolic engineering techniques that regulate the antioxidant enzymes activity for adaptation to drought stress in plants, enhancing plant tolerance through maintenance in cell homeostasis and ameliorates the adverse effects of water stress are of great potential in agriculture.

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Section: Avoidance and Tolerance Mechanismsmentioning

confidence: 99%

Drought Stress Impacts on Plants and Different Approaches to Alleviate Its Adverse Effects

Seleiman

Al-Suhaibani

Ali

et al. 2021

Plants

678

299

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“…In addition, anthocyanin has been used to distinguish drought-responsive traits. Tiwari et al, 2021 showed anthocyanin accumulation was induced in a drought-tolerant variety, and this was related with the increase in the transcription level of regulatory genes involved in antioxidative mechanisms [ 147 ]. Similarly, a previous study found that the purple rice variety that can produce anthocyanin in leaves at higher levels under drought conditions could alleviate the degree of drought damage [ 148 ].…”

Section: Significant Roles Of Anthocyanin From Purple Rice In Human Healthmentioning

confidence: 99%

The Potential of High-Anthocyanin Purple Rice as a Functional Ingredient in Human Health

Yamuangmorn

Prom‐u‐thai

2021

Antioxidants

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Purple rice is recognized as a source of natural anthocyanin compounds among health-conscious consumers who employ rice as their staple food. Anthocyanin is one of the major antioxidant compounds that protect against the reactive oxygen species (ROS) that cause cellular damage in plants and animals, including humans. The physiological role of anthocyanin in plants is not fully understood, but the benefits to human health are apparent against both chronic and non-chronic diseases. This review focuses on anthocyanin synthesis and accumulation in the whole plant of purple rice, from cultivation to the processed end products. The anthocyanin content in purple rice varies due to many factors, including genotype, cultivation, and management as well as post-harvest processing. The cultivation method strongly influences anthocyanin content in rice plants; water conditions, light quantity and quality, and available nutrients in the soil are important factors, while the low stability of anthocyanins means that they can be dramatically degraded under high-temperature conditions. The application of purple rice anthocyanins has been developed in both functional food and other purposes. To maximize the benefits of purple rice to human health, understanding the factors influencing anthocyanin synthesis and accumulation during the entire process from cultivation to product development can be a path for success.

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“…We further determined the role of OsPIP2;2 in the plant resistance to a physiological drought stress caused by Polyethylene glycol 6,000 (PEG 6000 ). PEG with molecular mass 4,000-8,000 effectively induces physiological drought in a variety of plant species, and PEG 6000 has been mostly used (Arisha et al, 2020;Dong et al, 2005;Hajihashemi & Geuns, 2016;Huang et al, 2019;Ren et al, 2019;Tiwari et al, 2020;Zhang et al, 2017). While PEG induces drought syndromes from leaf wilting to plant collapse, plants in this process may defend themselves by activating the drought tolerance pathway to preserve water relations (Dong et al, 2005;Zhang et al, 2017 PEG 6000 was used as an inducer of physiological drought stress (Dong et al, 2005;Dubois & Inzé, 2020) and applied to 15-day-old rice seedlings.…”

Section: Ospips Substratesmentioning

confidence: 99%

Rice aquaporin OsPIP2;2 is a water‐transporting facilitator in relevance to drought‐tolerant responses

et al. 2021

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In rice ( Oryza sativa ), the PLASMA MEMBRANE INTRINSIC PROTEIN (PIP) family of aquaporin has 11 members, OsPIP1;1 to OsPIP1;3, and OsPIP2;1 to OsPIP2;8, which are hypothesized to facilitate the transport of H 2 O and other small compounds across cell membranes. To date, however, only OsPIP1;2, OsPIP2;1, and OsPIP2;4 have been demonstrated for substrate selectivity in their source plant (rice). In this study, OsPIP2;2 was characterized as the most efficient facilitator of H 2 O transport across cell membranes in comparison with the other 10 OsPIPs. In concomitant tests of all OsPIP s, four genes ( OsPIP1;3 , OsPIP2;1 , OsPIP2;2 , and OsPIP2;4 ) were induced to express in leaves of rice plants following a physiological drought stress, while OsPIP2;2 was expressed to the highest level. After de novo expression in frog oocytes and yeast cells, the four OsPIP proteins were localized to the plasma membranes in trimer and tetramer and displayed the activity to increase the membrane permeability to H 2 O. In comparison, OsPIP2;2 was most supportive to H 2 O import to oocytes and yeast cells. After de novo expression in tobacco protoplasts, OsPIP2;2 exceeded OsPIP1;3, OsPIP2;1, and OsPIP2;4 to support H 2 O transport across the plasma membranes. OsPIP2;2‐mediated H 2 O transport was accompanied by drought‐tolerant responses, including increases in concentrations of proline and polyamines, both of which are physiological markers of drought tolerance. In rice protoplasts, H 2 O transport and drought‐tolerant responses, which included expression of marker genes of drought tolerance pathway, were considerably enhanced by OsPIP2;2 overexpression but strongly inhibited by the gene silencing. Furthermore, OsPIP2;2 played a role in maintenance of the cell membrane integrity and effectively protected rice cells from electrolyte leakage caused by the physiological drought stress. These results suggest that OsPIP2;2 is a predominant facilitator of H 2 O transport in relevance to drought tolerance in the plant.

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Root system architecture, physiological analysis and dynamic transcriptomics unravel the drought-responsive traits in rice genotypes

Cited by 43 publications

References 65 publications

Drought Stress Impacts on Plants and Different Approaches to Alleviate Its Adverse Effects

Drought Stress Impacts on Plants and Different Approaches to Alleviate Its Adverse Effects

The Potential of High-Anthocyanin Purple Rice as a Functional Ingredient in Human Health

Rice aquaporin OsPIP2;2 is a water‐transporting facilitator in relevance to drought‐tolerant responses

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