Root Response to Drought Stress in Rice (Oryza sativa L.)

Kim, Yoon-Ha; Chung, Yong‐Suk; Lee, Eun‐Gyeong; Tripathi, Pooja; Heo, Seongkook; Kim, Kyung-Hwan

doi:10.3390/ijms21041513

Cited by 227 publications

(179 citation statements)

References 179 publications

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“…Therefore, lower soil moisture indicated that the plants pre-treated with osmopriming at 20% PEG had higher capacity in absorbing water due to larger root biomass and longer roots (Table 8). Kim et al (2020) confirmed that there were some adaptive mechanisms in rice roots under drought stress, i.e. osmotic adjustment, increase density, deeper penetration, and increase root-to-shoot ratio.…”

Section: Carry-over Effect Of Seed Priming On Vegetative Growth In Ricesupporting

confidence: 54%

“…Drought stress caused stomatal closure, decreased photosynthetic, and other related physiological activities, and finally reduced rice yield (Singh et al 2012). Severe drought stress during reproductive stage of rice accounted for economic losses of 48 to 94% (Kim et al 2020). Furthermore, it also resulted in poor quality and aroma of rice grains (Arsa et al 2017;Yang et al 2019).…”

Section: Introductionmentioning

confidence: 99%

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Cross-ecosystem utilizing primed seeds of upland rice varieties for enriching crop diversity at riparian wetland during dry season

et al. 2020

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Abstract. Ria RP, Lakitan B, Sulaiman F, Kartika K, Suwignyo RA. 2020. Cross-ecosystem utilizing primed seeds of upland rice varieties for enriching crop diversity at riparian wetland during dry season. Biodiversitas 21: 3008-3017. Cultivation of rice during second growing season at riparian wetlands in Indonesia must deal with drought conditions at reproductive stage. Seed priming can speed up seed emergence and produces vigorous seedlings. Objective of this study was to screen upland rice varieties which were positively responded to seed priming and tolerant to drought during late vegetative and/or reproductive stage. Results of this study indicated that osmo-priming showed positive effects on seed emergence, percentage of germinated seed, and time to reach 50% germination. Effects of osmo-priming on seedling growth did not go beyond four weeks after seedlings had been transplanted. Among nine varieties screened, Inpago 10 exhibited better response to seed priming during late vegetative stage as it produced the highest number of tillers and total leaf area. However, at harvest, osmo-priming with 20% PEG lowered filled spikelet and weight of 100 grains but did not affect yield. Drought during late vegetative stage lessened number of tillers but after drought-treated plants recovered during reproductive stage, percentage of filled spikelet and grain size were comparable to those of control plants. Meanwhile, drought imposed during reproductive stage decreased percentage of filled spikelet and grain yield. Despite its better performance under drought conditions, leaf rolling score was higher during heading stage in Inpago 10. This phenomenon indicated that leaf rolling was not forced by drought, rather it was a quick response of Inpago 10 variety to limit water loss due to transpiration.

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Section: Carry-over Effect Of Seed Priming On Vegetative Growth In Ricesupporting

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Cross-ecosystem utilizing primed seeds of upland rice varieties for enriching crop diversity at riparian wetland during dry season

et al. 2020

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“…Root length measurement is considered a rapid phytotoxicity test method for chemicals such as fluoride [51]. Study of this indicator is also used to identify plant cultivars tolerant to many abiotic stresses [13,52,53]. The reduction of root length due to F toxicity has been reported in many crops such as wheat, rice, barley, rye, and various plant species (e.g., peas, cucumbers, radishes, tomatoes, and sunflowers) [25,31,38,40,41,46,54].…”

Section: Discussionmentioning

confidence: 99%

Effect of Fluoride on Germination, Early Growth and Antioxidant Enzymes Activity of Three Winter Wheat (Triticum aestivum L.) Cultivars

et al. 2020

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This paper assesses the impact of sodium fluoride on the morphological parameters and activity of catalase and peroxidase during the germination and root growth phases of three winter wheat cultivars: Tobak, Dalewar, and Arkadia. During examination, the seeds were placed on plastic Petri dishes with an NaF solution at concentrations of 0 (control), 2.5, 5.0, 8.0, and 10.0 mmol dm−3. The obtained results have shown a decrease in germination, inhibition of root growth, and inhibition of catalase activity, both in the embryos and roots of all tested winter wheat cultivars. The observed effects have been strengthened with the increase of the fluoride concentration. However, the effect of NaF on the peroxidase activity has been dependent on the wheat cultivar. It is difficult to state unequivocally which of the tested winter wheat cultivars has been characterized by the highest sensitivity to fluoride. An η2 analysis has confirmed that the NaF concentration has a greater effect than the winter wheat cultivar on the activity of the determined antioxidant enzymes.

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“…Severe moisture stress during the reproductive and grain-lling stage reduces the economic yield to 48-94% and 60% respectively in rice (Basnayake et al 2006). The current unpredictable climate changes causing frequent and severe droughts emphasize the need to understand the root phenomics in response to drought stress (Ghosh and Xu 2014;Kim et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Phytohormone cross-talk and antioxidant gadgets tussles osmotic stress in indigenous rice landraces during seed germination

Anupriya

Senthil

Rajakumar

et al. 2020

Preprint

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Seed germination plays a critical role in determining rice productivity under drought stress. We evaluated 100 traditional rice landraces originated from different agro-ecological zones of Tamil Nadu along with drought- susceptible (IR 64) and drought- tolerant (IR 64 DRT) checks. Moisture stress was induced using PEG 6000 and screening done over a range of osmotic potentials (-) 10 bars, (-) 12.5 bars and (-)15 bars for a period of 5 d. Physio-morphological traits such as germination rate, survival per cent, root and shoot length, vigor index, RS ratio and relative water content (RWC) were assessed during early drought stress. We observed significant changes in the seed macromolecules, phytohormone levels (GA and IAA), osmolytes and antioxidant responses (catalase and superoxide dismutase) between drought stress and control treatments. Kuliyadichan registered significantly higher IAA and GA (44% and 35% respectively over drought tolerant check IR 64 DRT) at drought stress, whereas all the landraces showed an elevated catalase activity. In PC analysis, first three PCs captured 88.93% of the total variation; significant differences were detected among genotypes with respect to the studied parameters. Six traditional landraces such as Kuliyadichan, Rajalakshmi, Sabhagidhan, Nootripathu, Chandaikar and Mallikar were selected and their inherent drought tolerance was associated with metabolic responses viz., triggered hydrolytic enzyme activities, hormonal cross-talk, ROS signaling and catalase under drought stress compared to drought sensitive IR64. Hence, these genotypes can be used as potential donor candidates towards genetic improvement of drought tolerance in rice.

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Root Response to Drought Stress in Rice (Oryza sativa L.)

Cited by 227 publications

References 179 publications

Cross-ecosystem utilizing primed seeds of upland rice varieties for enriching crop diversity at riparian wetland during dry season

Cross-ecosystem utilizing primed seeds of upland rice varieties for enriching crop diversity at riparian wetland during dry season

Effect of Fluoride on Germination, Early Growth and Antioxidant Enzymes Activity of Three Winter Wheat (Triticum aestivum L.) Cultivars

Phytohormone cross-talk and antioxidant gadgets tussles osmotic stress in indigenous rice landraces during seed germination

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