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Evaluation of Iraqi...
Evaluation of Iraqi Rice Cultivars for Their Tolerance to Drought Stress
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Al Azzawi, Tiba Nazar Ibrahim (författare)
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Khan, Murtaza (författare)
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Hussain, Adil (författare)
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Shahid, Muhammad (författare)
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- Imran, Qari Muhammad (författare)
- Umeå universitet,Institutionen för medicinsk kemi och biofysik,School of Applied Biosciences, Kyungpook National University, Korea
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Mun, Bong-Gyu (författare)
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Lee, Sang-Uk (författare)
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Yun, Byung-Wook (författare)
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(creator_code:org_t)
- 2020-11-13
- 2020
- Engelska.
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Ingår i: Agronomy. - : MDPI. - 2073-4395. ; 10:11
- Relaterad länk:
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https://doi.org/10.3...
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https://umu.diva-por... (primary) (Raw object)
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https://www.mdpi.com...
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
Ämnesord
Stäng
- Drought stress is a serious problem around the globe and particularly in the Republic of Iraq. Rice is the third most consumed crop for the Iraqi people; however, its cultivation and production is very low due to several challenges including drought. The current study was performed to evaluate five Iraqi rice cultivars along with relevant (drought-tolerant and drought-susceptible) controls under drought stress, either by treatment with 10% PEG (polyethylene glycol) or through water withholding to induce natural drought stress. The phenotypes of all the cultivars were evaluated and the transcriptional responses of key drought-responsive candidate genes, identified through the EST-SSR marker-based approach, were studied. We also studied transcript accumulation of drought-related transcriptional factors, such as OsGRASS23, OsbZIP12, and OsDREB2A. Moreover, the reference cultivars also included a drought-tolerant inter-specific cultivar Nerica 7 (a cross between Oryza sativa ssp. indica X O. glaberrima). Among the cultivars, the more drought-tolerant phenotypic characteristics and higher transcript accumulation of drought-related marker genes OsE647 and OsE1899 and transcriptional factors OsGRASS23, OsbZIP12, and OsDREB2A were observed in four (out of five) significantly drought-tolerant Iraqi cultivars; Mashkab, followed by Furat, Yasmen, and Amber 33. On another note, Amber Barka was found to be significantly drought susceptible. Mashkab and Amber Barka were found to be the most drought-tolerant and-susceptible cultivars, respectively. The identified tolerant cultivars may potentially serve as a genetic source for the incorporation of drought-tolerant phenotypes in rice.
Ämnesord
- LANTBRUKSVETENSKAPER -- Bioteknologi med applikationer på växter och djur -- Genetik och förädling inom lantbruksvetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Agricultural Biotechnology -- Genetics and Breeding in Agricultural Sciences (hsv//eng)
Nyckelord
- rice cultivars
- drought stress
- transcription factors
- chlorophyll content
- shoot and root length
- qRT PCR
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Agronomy
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