Halo- and UV-B priming-mediated drought tolerance and recovery in rice seedlings

Drought stress is a major stress constraint for the growth and establishment of rice seedlings. The objective of this study was to investigate the effects of UV-B and halo priming induced physiochemical changes in the seedling stage of drought-sensitive rice variety exposed to drought stress and rec...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Akhila Sen, Jos T. Puthur
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Antioxidants Drought Osmotic adjustment Oryza sativa Priming memory Abbreviations ROS Plant ecology QK900-989
Acceso en línea:	https://doaj.org/article/76c93a7574fc49ef95dd01c9513d1777
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:76c93a7574fc49ef95dd01c9513d1777
record_format	dspace
spelling	oai:doaj.org-article:76c93a7574fc49ef95dd01c9513d17772021-12-04T04:36:31ZHalo- and UV-B priming-mediated drought tolerance and recovery in rice seedlings2667-064X10.1016/j.stress.2021.100011https://doaj.org/article/76c93a7574fc49ef95dd01c9513d17772021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2667064X21000105https://doaj.org/toc/2667-064XDrought stress is a major stress constraint for the growth and establishment of rice seedlings. The objective of this study was to investigate the effects of UV-B and halo priming induced physiochemical changes in the seedling stage of drought-sensitive rice variety exposed to drought stress and recovery. The seedlings of Oryza sativa L. var. Neeraja were UV-B and halo primed and was further subjected to drought stress and recovery. Drought stress induced reactive oxygen species leads to the accumulation of carbonyl content indicating the impairment of photosynthetic machinery and various cellular activities. However, the seed priming resulted in the enhanced production of various metabolites such as proline, amino acids, soluble protein, total phenolics and total soluble sugar. Moreover, it increased the activities of antioxidant enzymes such as superoxide dismutase, catalase and ascorbate peroxidase in rice seedlings exposed to drought stress. After re-watering, all the increased physiochemical parameters of primed and non-primed rice seedlings returned to the levels as in control. The retention of priming memory in seedlings emerged from primed seeds make them more tolerant towards drought and rapid recovery occurs in response to re-watering. Thus, these results suggest that halo and UV-B priming of Oryza sativa seeds is an effective means for reducing drought stress impacts and enhancing the recovery rate from drought at the seedling stage .Akhila SenJos T. PuthurElsevierarticleAntioxidantsDroughtOsmotic adjustment Oryza sativaPriming memoryAbbreviationsROSPlant ecologyQK900-989ENPlant Stress, Vol 2, Iss , Pp 100011- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Antioxidants Drought Osmotic adjustment Oryza sativa Priming memory Abbreviations ROS Plant ecology QK900-989
spellingShingle	Antioxidants Drought Osmotic adjustment Oryza sativa Priming memory Abbreviations ROS Plant ecology QK900-989 Akhila Sen Jos T. Puthur Halo- and UV-B priming-mediated drought tolerance and recovery in rice seedlings
description	Drought stress is a major stress constraint for the growth and establishment of rice seedlings. The objective of this study was to investigate the effects of UV-B and halo priming induced physiochemical changes in the seedling stage of drought-sensitive rice variety exposed to drought stress and recovery. The seedlings of Oryza sativa L. var. Neeraja were UV-B and halo primed and was further subjected to drought stress and recovery. Drought stress induced reactive oxygen species leads to the accumulation of carbonyl content indicating the impairment of photosynthetic machinery and various cellular activities. However, the seed priming resulted in the enhanced production of various metabolites such as proline, amino acids, soluble protein, total phenolics and total soluble sugar. Moreover, it increased the activities of antioxidant enzymes such as superoxide dismutase, catalase and ascorbate peroxidase in rice seedlings exposed to drought stress. After re-watering, all the increased physiochemical parameters of primed and non-primed rice seedlings returned to the levels as in control. The retention of priming memory in seedlings emerged from primed seeds make them more tolerant towards drought and rapid recovery occurs in response to re-watering. Thus, these results suggest that halo and UV-B priming of Oryza sativa seeds is an effective means for reducing drought stress impacts and enhancing the recovery rate from drought at the seedling stage .
format	article
author	Akhila Sen Jos T. Puthur
author_facet	Akhila Sen Jos T. Puthur
author_sort	Akhila Sen
title	Halo- and UV-B priming-mediated drought tolerance and recovery in rice seedlings
title_short	Halo- and UV-B priming-mediated drought tolerance and recovery in rice seedlings
title_full	Halo- and UV-B priming-mediated drought tolerance and recovery in rice seedlings
title_fullStr	Halo- and UV-B priming-mediated drought tolerance and recovery in rice seedlings
title_full_unstemmed	Halo- and UV-B priming-mediated drought tolerance and recovery in rice seedlings
title_sort	halo- and uv-b priming-mediated drought tolerance and recovery in rice seedlings
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/76c93a7574fc49ef95dd01c9513d1777
work_keys_str_mv	AT akhilasen haloanduvbprimingmediateddroughttoleranceandrecoveryinriceseedlings AT jostputhur haloanduvbprimingmediateddroughttoleranceandrecoveryinriceseedlings
_version_	1718372919717920768

Halo- and UV-B priming-mediated drought tolerance and recovery in rice seedlings

Ejemplares similares