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C4 photosynthetic enzymes play a key role in wheat spike bracts primary carbon metabolism response under water deficit.
Plant Physiol Biochem 2019; 142:163-172PP

Abstract

C4 photosynthetic enzymes are present in C3 plants and participate in non-photosynthetic metabolism. Wheat spike bracts had a higher drought tolerance, photosynthesis and senesced later compared to the flag leaves under water deficit. This research was conducted to investigate the different response of primary carbon metabolism induced by C4 photosynthetic enzymes in wheat flag leaves and spike bracts including glumes and lemmas under water deficit. The activities of C4 photosynthetic enzymes and Ribulose bisphosphate carboxylase oxygenase (Rubisco), the expression of related genes and primary carbon metabolism contents were demonstrated in wheat flag leaves and spike bracts exposed to water deficit. Results showed that drought stress strongly inhibited wheat photosynthetic metabolism by decreasing Rubisco activity in flag leaves. The activities of phosphoenolpyruvate carboxylase (PEPC), NADP-malic enzyme (NADP-ME), phosphate dikinase (PPDK) and NADP- malic dehydrogenase (NADP-MDH) increased in wheat spike bracts under water deficit. Transcript levels of C4 photosynthetic genes in wheat spike bracts were higher under water deficit than that of control. Furthermore, the results indicated that drought stress induced changes in the contents of primary carbon metabolism including malate, oxaloacetic acid (OAA), citric, fumaric acid were organ-specific. In conclusion, the functions of C4 photosynthetic enzymes appear to be important for wheat spike bracts primary carbon metabolism and defence response under drought stress.

Authors+Show Affiliations

College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, PR China.College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, PR China.College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, PR China.College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, PR China.College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, PR China. Electronic address: jinyinlv@nwsuaf.edu.cn.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31299598

Citation

Zhang, Xu, et al. "C4 Photosynthetic Enzymes Play a Key Role in Wheat Spike Bracts Primary Carbon Metabolism Response Under Water Deficit." Plant Physiology and Biochemistry : PPB, vol. 142, 2019, pp. 163-172.
Zhang X, Pu P, Tang Y, et al. C4 photosynthetic enzymes play a key role in wheat spike bracts primary carbon metabolism response under water deficit. Plant Physiol Biochem. 2019;142:163-172.
Zhang, X., Pu, P., Tang, Y., Zhang, L., & Lv, J. (2019). C4 photosynthetic enzymes play a key role in wheat spike bracts primary carbon metabolism response under water deficit. Plant Physiology and Biochemistry : PPB, 142, pp. 163-172. doi:10.1016/j.plaphy.2019.06.013.
Zhang X, et al. C4 Photosynthetic Enzymes Play a Key Role in Wheat Spike Bracts Primary Carbon Metabolism Response Under Water Deficit. Plant Physiol Biochem. 2019 Jun 13;142:163-172. PubMed PMID: 31299598.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - C4 photosynthetic enzymes play a key role in wheat spike bracts primary carbon metabolism response under water deficit. AU - Zhang,Xu, AU - Pu,Peng, AU - Tang,Yan, AU - Zhang,Lixin, AU - Lv,Jinyin, Y1 - 2019/06/13/ PY - 2019/03/26/received PY - 2019/06/11/revised PY - 2019/06/11/accepted PY - 2019/7/13/pubmed PY - 2019/7/13/medline PY - 2019/7/13/entrez KW - C4 photosynthetic enzymes KW - Carbon metabolism KW - Water deficit KW - Wheat spike bracts SP - 163 EP - 172 JF - Plant physiology and biochemistry : PPB JO - Plant Physiol. Biochem. VL - 142 N2 - C4 photosynthetic enzymes are present in C3 plants and participate in non-photosynthetic metabolism. Wheat spike bracts had a higher drought tolerance, photosynthesis and senesced later compared to the flag leaves under water deficit. This research was conducted to investigate the different response of primary carbon metabolism induced by C4 photosynthetic enzymes in wheat flag leaves and spike bracts including glumes and lemmas under water deficit. The activities of C4 photosynthetic enzymes and Ribulose bisphosphate carboxylase oxygenase (Rubisco), the expression of related genes and primary carbon metabolism contents were demonstrated in wheat flag leaves and spike bracts exposed to water deficit. Results showed that drought stress strongly inhibited wheat photosynthetic metabolism by decreasing Rubisco activity in flag leaves. The activities of phosphoenolpyruvate carboxylase (PEPC), NADP-malic enzyme (NADP-ME), phosphate dikinase (PPDK) and NADP- malic dehydrogenase (NADP-MDH) increased in wheat spike bracts under water deficit. Transcript levels of C4 photosynthetic genes in wheat spike bracts were higher under water deficit than that of control. Furthermore, the results indicated that drought stress induced changes in the contents of primary carbon metabolism including malate, oxaloacetic acid (OAA), citric, fumaric acid were organ-specific. In conclusion, the functions of C4 photosynthetic enzymes appear to be important for wheat spike bracts primary carbon metabolism and defence response under drought stress. SN - 1873-2690 UR - https://www.unboundmedicine.com/medline/citation/31299598/C4_photosynthetic_enzymes_play_a_key_role_in_wheat_spike_bracts_primary_carbon_metabolism_response_under_water_deficit L2 - https://linkinghub.elsevier.com/retrieve/pii/S0981-9428(19)30248-7 DB - PRIME DP - Unbound Medicine ER -