Thermotolerance evaluation of Taiwan Japonica type rice cultivars at the seedling stage

Hsuan, Ta-Ping; Jhuang, Pei-Rong; Wu, Wen-Chin; Lur, Huu‐Sheng

doi:10.1186/s40529-019-0277-7

Cited by 11 publications

(4 citation statements)

References 22 publications

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“…Further the efficiency of the technique is well explored with limited genotyping panel to arrive at small number of useful markers out of huge tests, for further studies (Gouda et al, 2020). The above outcomes propose that the TIR strategy is an amazing and productive method to recognize hereditary changeability in high temperature resistance in rice inside a brief timeframe and it is appropriate for screening an enormous number of genotypes (Hsuan et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

Identification of Thermotolerant Rice Genotypes with Allele Coding at Seedling Stage

Shankar

Kaushik

2021

Preprint

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Rice- The most important plant in the world to ensure food security. Heat is one of the main factors that greatly limit rice production. With the increasing global warming, industrialization there is a great effect on climate change which requires us to see various alternatives for strains that are more tolerant to heat so that some techniques are developed to filter a large number of genotypes for high temperature tolerance. Here we report the standardization of Temperature Induction Response (TIR) technique to identify thermotolerant rice genotypes. The phenotypic characteristics of Rice due to high temperature is calculated with germination (%), growth of the seedling and molecular analysis is also considered. The heat stress is provided to the plants with the help of TIR protocol with the adjustment of temperature to lethal (55oC) and sub-lethal levels (38-55oC) in a TIR chamber with alterations in humidity. Of the 74 genotypes screened, 14 showed thermo tolerance caused by high temperatures. Both tolerant and sensitive genotypes were separated based on their survival percentages. The tolerant class are selected based on the growth and development of genotypes having high survival percentage and also their shoot and root lengths, fresh and dry weights are compared to the heat tolerant checks N22, Dular and Nipponbare. These genotypes have intrinsic heat tolerance and thus can be explored as a source of donors in breeding programs intended for global warming. The molecular markers which are identified to be linked with heat tolerant class through allele code are quite helpful and can be used in marker assisted breeding approach to attain heat tolerance in cultivated varieties.

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Section: Discussionmentioning

confidence: 99%

Identification of Thermotolerant Rice Genotypes with Allele Coding at Seedling Stage

Shankar

Kaushik

2021

Preprint

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“…In the last few decades, high-temperature stress has become a major environmental stressor that restricts proper growth and yield of crops [ 36 , 37 ], and the promotion of grafting technology provides an opportunity to improve crop resistance to various biotic and abiotic stresses, including high-temperature stress [ 6 ]. In our study, heat stress at 42/32 °C (day/night) significantly prevented the growth of grafted seedlings.…”

Section: Discussionmentioning

confidence: 99%

Bitter Melon (Momordica charantia L.) Rootstock Improves the Heat Tolerance of Cucumber by Regulating Photosynthetic and Antioxidant Defense Pathways

Tao

Jahan

Hou

et al. 2020

Plants

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High temperature is considered a critical abiotic stressor that is increasing continuously, which is severely affecting plant growth and development. The use of heat-resistant rootstock grafting is a viable technique that is practiced globally to improve plant resistance towards abiotic stresses. In this experiment, we explored the efficacy of bitter melon rootstock and how it regulates photosynthesis and the antioxidant defense system to alleviate heat stress (42 °C/32 °C) in cucumber. Our results revealed that bitter-melon-grafted seedlings significantly relieved heat-induced growth inhibition and photoinhibition, maintained better photosynthesis activity, and accumulated a greater biomass than self-grafted seedlings. We measured the endogenous polyamine and hydrogen peroxide (H2O2) contents to determine the inherent mechanism responsible for these effects, and the results showed that heat stress induced a transient increase in polyamines and H2O2 in the inner courtyard of grafted seedlings. This increment was greater and more robust in bitter-melon-grafted seedlings. In addition, the use of polyamine synthesis inhibitors MGBG (methylglyoxal bis-guanylhydrazone) and D-Arg (D-arginine), further confirmed that the production of H2O2 under heat stress is mediated by the accumulation of endogenous polyamines. Moreover, compared with other treatments, the bitter-melon-grafted seedlings maintained high levels of antioxidant enzyme activity under high temperature conditions. However, these activities were significantly inhibited by polyamine synthesis inhibitors and H2O2 scavengers (dimethylthiourea, DMTU), indicating that bitter melon rootstock not only maintained better photosynthetic activity under conditions of high temperature stress but also mediated the production of H2O2 through the regulation of the high level of endogenous polyamines, thereby boosting the antioxidant defense system and comprehensively improving the heat tolerance of cucumber seedlings. Taken together, these results indicate that grafting with a resistant cultivar is a promising alternative tool for reducing stress-induced damage.

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“…It is also reported that an increase of temperature ranging between 45-53°C decreased the seed viability with no significant effect on seed vigor, whereas temperature higher than 53-55°C reduced seed germination (Lewis Ivey & Miller, 2004). Hot water disinfection for a long time (60°C for 30 min) decreased the germination percentage and emergence of rice varieties (Hsuan, Jhuang, Wu, & Lur, 2019). Seeds of burdock (Prosopis) species treated with boiling ISSN 2166-0379 2020 water increased the germination (Pasiecznik, Harris, Tavares, & Cassama, 1998).…”

Section: Disinfection With Plant Preservative Mixture (Ppm Tm )mentioning

confidence: 98%

Disinfection of Orange Seeds to Reduce Citrus Canker Dissemination and Improve Germination

Akbar

Asad²,

Ahmad³

et al. 2020

JAS

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We evaluated chemo and thermotherapy for decontaminating orange seeds against the bacteria Xanthomonas citri subsp. citri (Xcc), a quarantine and economically important disease worldwide. We infected orange (cv. Valencia) seeds with bacterial inoculum and studied the potential of three different methods i.e. surface sterilization with bleach, disinfection with plant preservative mixture, and hot water treatment to eliminate the bacteria. Our findings showed that the hot water, bleach (NaOCl), and a commercially available mixture of antifungal and antibacterial compounds known as Plant Preservative Mixture (PPM) were very effective in eliminating most bacterial contamination from orange seeds. Our results also showed that treatment with bleach and hot water treatment enhanced seed germination and seedling vigor. Germination rate ranged from 18.51 to 77.78%, 7.41 to 62.96% and 13.33 to 66.67% for bleach, PPM and hot water treatments, respectively. Seedling height ranged from 4.28 to 6.63cm, 4.17 to 5.94cm and 3.42 to 5.99cm for bleach, PPM and hot water treatment, respectively. Findings of this study will provide impactful and practical methods for an economical and robust seed decontamination method.

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Thermotolerance evaluation of Taiwan Japonica type rice cultivars at the seedling stage

Cited by 11 publications

References 22 publications

Identification of Thermotolerant Rice Genotypes with Allele Coding at Seedling Stage

Identification of Thermotolerant Rice Genotypes with Allele Coding at Seedling Stage

Bitter Melon (Momordica charantia L.) Rootstock Improves the Heat Tolerance of Cucumber by Regulating Photosynthetic and Antioxidant Defense Pathways

Disinfection of Orange Seeds to Reduce Citrus Canker Dissemination and Improve Germination

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