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Improved tolerance to post-anthesis drought stress by pre-drought priming at vegetative stages in drought-tolerant and -sensitive wheat cultivars.
Plant Physiol Biochem 2016; 106:218-27PP

Abstract

Wheat crop endures a considerable penalty of yield reduction to escape the drought events during post-anthesis period. Drought priming under a pre-drought stress can enhance the crop potential to tolerate the subsequent drought stress by triggering a faster and stronger defense mechanism. Towards these understandings, a set of controlled moderate drought stress at 55-60% field capacity (FC) was developed to prime the plants of two wheat cultivars namely Luhan-7 (drought tolerant) and Yangmai-16 (drought sensitive) during tillering (Feekes 2 stage) and jointing (Feekes 6 stage), respectively. The comparative response of primed and non-primed plants, cultivars and priming stages was evaluated by applying a subsequent severe drought stress at 7 days after anthesis. The results showed that primed plants of both cultivars showed higher potential to tolerate the post-anthesis drought stress through improved leaf water potential, more chlorophyll, and ribulose-1, 5-bisphosphate carboxylase/oxygenase contents, enhanced photosynthesis, better photoprotection and efficient enzymatic antioxidant system leading to less yield reductions. The primed plants of Luhan-7 showed higher capability to adapt the drought stress events than Yangmai-16. The positive effects of drought priming to sustain higher grain yield were pronounced in plants primed at tillering than those primed at jointing. In consequence, upregulated functioning of photosynthetic apparatus and efficient enzymatic antioxidant activities in primed plants indicated their superior potential to alleviate a subsequently occurring drought stress, which contributed to lower yield reductions than non-primed plants. However, genotypic and priming stages differences in response to drought stress also contributed to affect the capability of primed plants to tolerate the post-anthesis drought stress conditions in wheat.

Authors+Show Affiliations

Key Laboratory of Crop Physiology, Ecology and Production Management, Nanjing Agricultural University, Nanjing 210095, Jiangsu Province, PR China.Key Laboratory of Crop Physiology, Ecology and Production Management, Nanjing Agricultural University, Nanjing 210095, Jiangsu Province, PR China.Key Laboratory of Crop Physiology, Ecology and Production Management, Nanjing Agricultural University, Nanjing 210095, Jiangsu Province, PR China.Key Laboratory of Crop Physiology, Ecology and Production Management, Nanjing Agricultural University, Nanjing 210095, Jiangsu Province, PR China.Key Laboratory of Crop Physiology, Ecology and Production Management, Nanjing Agricultural University, Nanjing 210095, Jiangsu Province, PR China.Key Laboratory of Crop Physiology, Ecology and Production Management, Nanjing Agricultural University, Nanjing 210095, Jiangsu Province, PR China.Key Laboratory of Crop Physiology, Ecology and Production Management, Nanjing Agricultural University, Nanjing 210095, Jiangsu Province, PR China.Key Laboratory of Crop Physiology, Ecology and Production Management, Nanjing Agricultural University, Nanjing 210095, Jiangsu Province, PR China. Electronic address: tingbod@njau.edu.cn.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27179928

Citation

Abid, Muhammad, et al. "Improved Tolerance to Post-anthesis Drought Stress By Pre-drought Priming at Vegetative Stages in Drought-tolerant and -sensitive Wheat Cultivars." Plant Physiology and Biochemistry : PPB, vol. 106, 2016, pp. 218-27.
Abid M, Tian Z, Ata-Ul-Karim ST, et al. Improved tolerance to post-anthesis drought stress by pre-drought priming at vegetative stages in drought-tolerant and -sensitive wheat cultivars. Plant Physiol Biochem. 2016;106:218-27.
Abid, M., Tian, Z., Ata-Ul-Karim, S. T., Liu, Y., Cui, Y., Zahoor, R., ... Dai, T. (2016). Improved tolerance to post-anthesis drought stress by pre-drought priming at vegetative stages in drought-tolerant and -sensitive wheat cultivars. Plant Physiology and Biochemistry : PPB, 106, pp. 218-27. doi:10.1016/j.plaphy.2016.05.003.
Abid M, et al. Improved Tolerance to Post-anthesis Drought Stress By Pre-drought Priming at Vegetative Stages in Drought-tolerant and -sensitive Wheat Cultivars. Plant Physiol Biochem. 2016;106:218-27. PubMed PMID: 27179928.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Improved tolerance to post-anthesis drought stress by pre-drought priming at vegetative stages in drought-tolerant and -sensitive wheat cultivars. AU - Abid,Muhammad, AU - Tian,Zhongwei, AU - Ata-Ul-Karim,Syed Tahir, AU - Liu,Yang, AU - Cui,Yakun, AU - Zahoor,Rizwan, AU - Jiang,Dong, AU - Dai,Tingbo, Y1 - 2016/05/05/ PY - 2016/04/07/received PY - 2016/05/04/revised PY - 2016/05/04/accepted PY - 2016/5/16/entrez PY - 2016/5/18/pubmed PY - 2017/3/28/medline KW - Antioxidants KW - Drought stress KW - Photosynthesis KW - Post-anthesis KW - Pre-drought priming KW - Winter wheat SP - 218 EP - 27 JF - Plant physiology and biochemistry : PPB JO - Plant Physiol. Biochem. VL - 106 N2 - Wheat crop endures a considerable penalty of yield reduction to escape the drought events during post-anthesis period. Drought priming under a pre-drought stress can enhance the crop potential to tolerate the subsequent drought stress by triggering a faster and stronger defense mechanism. Towards these understandings, a set of controlled moderate drought stress at 55-60% field capacity (FC) was developed to prime the plants of two wheat cultivars namely Luhan-7 (drought tolerant) and Yangmai-16 (drought sensitive) during tillering (Feekes 2 stage) and jointing (Feekes 6 stage), respectively. The comparative response of primed and non-primed plants, cultivars and priming stages was evaluated by applying a subsequent severe drought stress at 7 days after anthesis. The results showed that primed plants of both cultivars showed higher potential to tolerate the post-anthesis drought stress through improved leaf water potential, more chlorophyll, and ribulose-1, 5-bisphosphate carboxylase/oxygenase contents, enhanced photosynthesis, better photoprotection and efficient enzymatic antioxidant system leading to less yield reductions. The primed plants of Luhan-7 showed higher capability to adapt the drought stress events than Yangmai-16. The positive effects of drought priming to sustain higher grain yield were pronounced in plants primed at tillering than those primed at jointing. In consequence, upregulated functioning of photosynthetic apparatus and efficient enzymatic antioxidant activities in primed plants indicated their superior potential to alleviate a subsequently occurring drought stress, which contributed to lower yield reductions than non-primed plants. However, genotypic and priming stages differences in response to drought stress also contributed to affect the capability of primed plants to tolerate the post-anthesis drought stress conditions in wheat. SN - 1873-2690 UR - https://www.unboundmedicine.com/medline/citation/27179928/Improved_tolerance_to_post_anthesis_drought_stress_by_pre_drought_priming_at_vegetative_stages_in_drought_tolerant_and__sensitive_wheat_cultivars_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0981-9428(16)30173-5 DB - PRIME DP - Unbound Medicine ER -