Alleviating Role of Gibberellic Acid in Enhancing Plant Growth and Stimulating Phenolic Compounds in Carrot (<i>Daucus carota</i> L.) under Lead Stress

Toxicity of heavy-metals in soil is a major constraint for the production of carrots (<i>Daucus carota</i> L.). Different plant growth regulators are being used to overcome this problem. It has been found that plant growth regulators induce stress tolerance in plants. In this study, the...

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Autores principales:	Muhammad Awais Ghani, Muhammad Mehran Abbas, Basharat Ali, Rukhsanda Aziz, Rashad Waseem Khan Qadri, Anam Noor, Muhammad Azam, Saleem Bahzad, Muhammad Hamzah Saleem, Muyassar H. Abualreesh, Aishah Alatawi, Shafaqat Ali
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	hormone application photosynthetic attributes soluble salts Pb toxicity vegetables Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/210d3a20859940b39d4abc8f878c3555
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spelling	oai:doaj.org-article:210d3a20859940b39d4abc8f878c35552021-11-11T19:51:48ZAlleviating Role of Gibberellic Acid in Enhancing Plant Growth and Stimulating Phenolic Compounds in Carrot (<i>Daucus carota</i> L.) under Lead Stress10.3390/su1321123292071-1050https://doaj.org/article/210d3a20859940b39d4abc8f878c35552021-11-01T00:00:00Zhttps://www.mdpi.com/2071-1050/13/21/12329https://doaj.org/toc/2071-1050Toxicity of heavy-metals in soil is a major constraint for the production of carrots (<i>Daucus carota</i> L.). Different plant growth regulators are being used to overcome this problem. It has been found that plant growth regulators induce stress tolerance in plants. In this study, the role of exogenously applied plant growth regulator, gibberellic acid (GA<sub>3</sub>) was examined in soil grown two carrot cultivars under four different levels of lead (0, 50, 100, and 150 mg/kg) with one level of gibberellic acid (50 ppm). Results showed that Pb stress retarded the plant growth and reduced chlorophyll contents in the leaves of both carrot cultivars. A significant decrease was observed in photosynthetic attributes by Pb addition alone. However, exogenously applied GA<sub>3</sub> ameliorated the plant growth and chlorophyll contents in the leaves of both carrot cultivars under Pb stressed conditions. Moreover, GA<sub>3</sub> also decreased the uptake of Pb concentration in carrot leaves and roots. In addition, GA<sub>3</sub> significantly regulated the phenolic compounds concentration in both carrot cultivars under Pb stress. In this study, cultivar T-29 was found to be more tolerant to Pb stress, however, cultivar Mevarick experienced higher damage regarding plant growth under Pb stress.Muhammad Awais GhaniMuhammad Mehran AbbasBasharat AliRukhsanda AzizRashad Waseem Khan QadriAnam NoorMuhammad AzamSaleem BahzadMuhammad Hamzah SaleemMuyassar H. AbualreeshAishah AlatawiShafaqat AliMDPI AGarticlehormone applicationphotosynthetic attributessoluble saltsPb toxicityvegetablesEnvironmental effects of industries and plantsTD194-195Renewable energy sourcesTJ807-830Environmental sciencesGE1-350ENSustainability, Vol 13, Iss 12329, p 12329 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	hormone application photosynthetic attributes soluble salts Pb toxicity vegetables Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
spellingShingle	hormone application photosynthetic attributes soluble salts Pb toxicity vegetables Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 Muhammad Awais Ghani Muhammad Mehran Abbas Basharat Ali Rukhsanda Aziz Rashad Waseem Khan Qadri Anam Noor Muhammad Azam Saleem Bahzad Muhammad Hamzah Saleem Muyassar H. Abualreesh Aishah Alatawi Shafaqat Ali Alleviating Role of Gibberellic Acid in Enhancing Plant Growth and Stimulating Phenolic Compounds in Carrot (<i>Daucus carota</i> L.) under Lead Stress
description	Toxicity of heavy-metals in soil is a major constraint for the production of carrots (<i>Daucus carota</i> L.). Different plant growth regulators are being used to overcome this problem. It has been found that plant growth regulators induce stress tolerance in plants. In this study, the role of exogenously applied plant growth regulator, gibberellic acid (GA<sub>3</sub>) was examined in soil grown two carrot cultivars under four different levels of lead (0, 50, 100, and 150 mg/kg) with one level of gibberellic acid (50 ppm). Results showed that Pb stress retarded the plant growth and reduced chlorophyll contents in the leaves of both carrot cultivars. A significant decrease was observed in photosynthetic attributes by Pb addition alone. However, exogenously applied GA<sub>3</sub> ameliorated the plant growth and chlorophyll contents in the leaves of both carrot cultivars under Pb stressed conditions. Moreover, GA<sub>3</sub> also decreased the uptake of Pb concentration in carrot leaves and roots. In addition, GA<sub>3</sub> significantly regulated the phenolic compounds concentration in both carrot cultivars under Pb stress. In this study, cultivar T-29 was found to be more tolerant to Pb stress, however, cultivar Mevarick experienced higher damage regarding plant growth under Pb stress.
format	article
author	Muhammad Awais Ghani Muhammad Mehran Abbas Basharat Ali Rukhsanda Aziz Rashad Waseem Khan Qadri Anam Noor Muhammad Azam Saleem Bahzad Muhammad Hamzah Saleem Muyassar H. Abualreesh Aishah Alatawi Shafaqat Ali
author_facet	Muhammad Awais Ghani Muhammad Mehran Abbas Basharat Ali Rukhsanda Aziz Rashad Waseem Khan Qadri Anam Noor Muhammad Azam Saleem Bahzad Muhammad Hamzah Saleem Muyassar H. Abualreesh Aishah Alatawi Shafaqat Ali
author_sort	Muhammad Awais Ghani
title	Alleviating Role of Gibberellic Acid in Enhancing Plant Growth and Stimulating Phenolic Compounds in Carrot (<i>Daucus carota</i> L.) under Lead Stress
title_short	Alleviating Role of Gibberellic Acid in Enhancing Plant Growth and Stimulating Phenolic Compounds in Carrot (<i>Daucus carota</i> L.) under Lead Stress
title_full	Alleviating Role of Gibberellic Acid in Enhancing Plant Growth and Stimulating Phenolic Compounds in Carrot (<i>Daucus carota</i> L.) under Lead Stress
title_fullStr	Alleviating Role of Gibberellic Acid in Enhancing Plant Growth and Stimulating Phenolic Compounds in Carrot (<i>Daucus carota</i> L.) under Lead Stress
title_full_unstemmed	Alleviating Role of Gibberellic Acid in Enhancing Plant Growth and Stimulating Phenolic Compounds in Carrot (<i>Daucus carota</i> L.) under Lead Stress
title_sort	alleviating role of gibberellic acid in enhancing plant growth and stimulating phenolic compounds in carrot (<i>daucus carota</i> l.) under lead stress
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/210d3a20859940b39d4abc8f878c3555
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Alleviating Role of Gibberellic Acid in Enhancing Plant Growth and Stimulating Phenolic Compounds in Carrot (<i>Daucus carota</i> L.) under Lead Stress

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