干旱区生态环境知识资源中心(Arid): Sensitivity and biochemical mechanisms of sunflower genotypes exposed to saline and water stress

Arid

DOI	10.1007/s11738-019-2953-3
	Sensitivity and biochemical mechanisms of sunflower genotypes exposed to saline and water stress
	Santana Dantas Barros, Cibelley Vanucia 1; Melo, Yuri Lima 2; Souza, Matheus de Freitas 1; Silva, Daniel Valadao 1; Costa de Macedo, Cristiane Elizabeth 3
通讯作者	Souza, Matheus de Freitas
来源期刊	ACTA PHYSIOLOGIAE PLANTARUM
ISSN	0137-5881
EISSN	1861-1664
出版年	2019
卷号	41 期号:9
英文摘要	Crops tolerant to salt and drought stress are an excellent alternative for producers in semi-arid regions. However, it is necessary to select the crops more tolerant and understand their involved mechanisms. We evaluated the effects of salinity and drought on growth, water status, membrane integrity, as well the behavior of organic and inorganic solutes in sunflower genotypes. Greenhouse experiments were performed to evaluate the tolerance of sunflower genotypes (Catissol 01 and Helio 253) to the salt and drought stress. The salt and drought stress were simulated by sodium chloride (NaCl) and polyethylene glycol (PEG 6000), respectively. The treatments with NaCl and PEG 6000 induced adverse changes on the growth, water status and cell membranes of the sunflower plants. Sunflower genotypes are more sensitive to water deficit due to the higher osmotic imbalance. The presence of saline ions minimized damages in sunflowers genotypes caused by lower water potential. The Catissol 01 genotype accumulated Na+ in the stem and roots avoiding translocation to the leaves. Helio 253 showed higher tolerance to the salt and drought stress than Catissol 01. Salinity and drought caused alterations on the carbohydrates and nitrogen compounds of the two sunflower genotypes. Soluble sugars, soluble proteins, free amino acids, and proline participate differently in the osmotic adjustment of the genotypes. The accumulation of soluble sugars, soluble proteins, and proline in the leaves is a mechanism that increases the tolerance to the salt and drought stress in the Helio 253 genotype.
英文关键词	Helianthus annuus L Membrane damage Osmoregulators mechanisms
类型	Article
语种	英语
国家	Brazil
收录类别	SCI-E
WOS记录号	WOS:000480467600001
WOS关键词	OSMOTIC-STRESS ; DROUGHT STRESS ; TOLERANCE ; GROWTH ; ABSORPTION ; ADJUSTMENT ; CULTIVARS ; SEEDLINGS ; PROLINE ; YIELD
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/213864
作者单位	1.Univ Rural Semiarido, Dept Crop Prod, Mossoro, RN, Brazil; 2.Univ Estadual Paraiba, Dept Crop Prod, Campina Grande, PB, Brazil; 3.Univ Fed Rio Grande do Norte, Dept Crop Prod, Campus Univ, Natal, RN, Brazil
推荐引用方式 GB/T 7714	Santana Dantas Barros, Cibelley Vanucia,Melo, Yuri Lima,Souza, Matheus de Freitas,et al. Sensitivity and biochemical mechanisms of sunflower genotypes exposed to saline and water stress[J],2019,41(9).
APA	Santana Dantas Barros, Cibelley Vanucia,Melo, Yuri Lima,Souza, Matheus de Freitas,Silva, Daniel Valadao,&Costa de Macedo, Cristiane Elizabeth.(2019).Sensitivity and biochemical mechanisms of sunflower genotypes exposed to saline and water stress.ACTA PHYSIOLOGIAE PLANTARUM,41(9).
MLA	Santana Dantas Barros, Cibelley Vanucia,et al."Sensitivity and biochemical mechanisms of sunflower genotypes exposed to saline and water stress".ACTA PHYSIOLOGIAE PLANTARUM 41.9(2019).