Application of hypergravity in Eucalyptus and Corymbia seeds

Nunes, Ana Paula Ferreira; Santos, Glêison Augusto dos; Santos, Manuel S.; Russomano, Thaís; Santos, Osmarino Pires dos; Valente, Brígida Maria dos Reis Teixeira; Resende, Marcos Deon Vilela de

doi:10.1590/0103-8478cr20170233

Cited by 5 publications

(2 citation statements)

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“… 8 , 9 and Nunes et al . 33 reported similar robust seedling vigor phenotype upon hypergravity treatment in carrot and rocket salad (7 ×g ) and, eucalyptus and corymbia (at 7 ×g for 8 h and 1 ×g for the rest of 16 h for 9 days cycle; uninterrupted hypergravity at 7 ×g and 5 ×g for 8 and 24 h) respectively.…”

Section: Discussionmentioning

confidence: 68%

Novel hypergravity treatment enhances root phenotype and positively influences physio-biochemical parameters in bread wheat (Triticum aestivum L.)

Swamy

Hosamani

Sathasivam

et al. 2021

Sci Rep

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Hypergravity—an evolutionarily novel environment has been exploited to comprehend the response of living organisms including plants in the context of extra-terrestrial applications. Recently, researchers have shown that hypergravity induces desired phenotypic variability in seedlings. In the present study, we tested the utility of hypergravity as a novel tool in inducing reliable phenotype/s for potential terrestrial crop improvement applications. To investigate, bread wheat seeds (UAS-375 genotype) were subjected to hypergravity treatment (10×g for 12, and 24 h), and evaluated for seedling vigor and plant growth parameters in both laboratory and greenhouse conditions. It was also attempted to elucidate the associated biochemical and hormonal changes at different stages of vegetative growth. Resultant data revealed that hypergravity treatment (10×g for 12 h) significantly enhanced root length, root volume, and root biomass in response to hypergravity. The robust seedling growth phenotype may be attributed to increased alpha-amylase and TDH enzyme activities observed in seeds treated with hypergravity. Elevated total chlorophyll content and Rubisco (55 kDa) protein expression across different stages of vegetative growth in response to hypergravity may impart physiological benefits to wheat growth. Further, hypergravity elicited robust endogenous phytohormones dynamics in root signifying altered phenotype/s. Collectively, this study for the first time describes the utility of hypergravity as a novel tool in inducing reliable root phenotype that could be potentially exploited for improving wheat varieties for better water usage management.

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Section: Discussionmentioning

confidence: 68%

Novel hypergravity treatment enhances root phenotype and positively influences physio-biochemical parameters in bread wheat (Triticum aestivum L.)

Swamy

Hosamani

Sathasivam

et al. 2021

Sci Rep

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“…Consistently, seeds of rocket salad (Eruca sativa) and carrot exposed to intermittent hypergravity (17g) exhibited robust seedling vigor phenotype (Santos et al, 2012). Similarly, eucalyptus and corymbia seeds exposed to uninterrupted hypergravity treatment at 7g and 5g for 8 and 24 hrs respectively enhanced germination and seedling vigor in the nursery stage (Nunes et al, 2018). Seedling vigor being a critical and yield-defining parameter helps in establishing rapid, uniform germination, and robust seedling growth in diverse agro-climatic conditions.…”

Section: Discussionmentioning

confidence: 92%

Influence of hypergravity – a novel stimulus on root growth phenotype and physio-biochemical parameters in sorghum (Sorghum bicolor L.)

Honnutagi,

Hosamani

et al. 2023

Preprint

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Plants on Earth are evolutionarily subjected to constant mechanical stimulation of the gravitational field. Earth’s gravity (1g) significantly influences the growth and morphogenesis of crop plants. Hypergravity, an evolutionarily novel environment has been exploited to comprehend the response of plants in the context of terrestrial and extra-terrestrial applications. Recently, researchers have shown that hypergravity induces desired phenotypic variability that can be utilized for improving terrestrial agriculture. In the present study, we tested the hypothesis that hypergravity can be used as a novel tool for inducing reliable phenotypes that can be further exploited for crop improvement programs. In the present investigation, screening is done with varied hypergravity regimen in sorghum, The acute hypergravity (1000g for 1 hr) regimen induced a significant increase in seedling vigor and plant growth parameters in both laboratory and greenhouse conditions. Among nine genotypes screened, three best-responding were chosen for further study. Additionally, we quantified associated biochemical, and hormonal changes. Resultant data revealed a significant increase in total dehydrogenase enzyme activity in seed; catalase, superoxide dismutase enzymes in seedlings, and elevated total chlorophyll content in response to hypergravity. Further, hypergravity elicits robust phytohormones dynamics in the root seedlings, and endogenous levels of 3-Indole Acetic Acid and indole-3-butyric acid are shown to have a direct correlation with the regulation of root phenotypes. Collectively, this work describes the utility of hypergravity as a novel tool for inducing phenotype/s that could be potentially exploited for improving crop plants in the future.

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