Abscisic acid concentrations are correlated with leaf area reductions in two salt-stressed rapid-cycling Brassica species

He, Tie; Cramer, Grant R.

doi:10.1007/bf00011639

Cited by 113 publications

(62 citation statements)

References 33 publications

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“…Hormonal responses are similar; for instance, abscisic acid levels rise within 1 h of a imposition of water stress (Bensen et al 1988) and salt stress (He & Cramer 1996). Photosynthesis also decreases in both water and salt stress, the responses being over the time scale of days rather than minutes.…”

Section: Resultsmentioning

confidence: 99%

Comparative physiology of salt and water stress

Munns

2002

Plant Cell & Environment

5,227

144

3,388

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Plant responses to salt and water stress have much in common. Salinity reduces the ability of plants to take up water, and this quickly causes reductions in growth rate, along with a suite of metabolic changes identical to those caused by water stress. The initial reduction in shoot growth is probably due to hormonal signals generated by the roots. There may be salt-specific effects that later have an impact on growth; if excessive amounts of salt enter the plant, salt will eventually rise to toxic levels in the older transpiring leaves, causing premature senescence, and reduce the photosynthetic leaf area of the plant to a level that cannot sustain growth. These effects take time to develop. Salttolerant plants differ from salt-sensitive ones in having a low rate of Na + and Cl -transport to leaves, and the ability to compartmentalize these ions in vacuoles to prevent their build-up in cytoplasm or cell walls and thus avoid salt toxicity. In order to understand the processes that give rise to tolerance of salt, as distinct from tolerance of osmotic stress, and to identify genes that control the transport of salt across membranes, it is important to avoid treatments that induce cell plasmolysis, and to design experiments that distinguish between tolerance of salt and tolerance of water stress.

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Section: Resultsmentioning

confidence: 99%

Comparative physiology of salt and water stress

Munns

2002

Plant Cell & Environment

5,227

144

3,388

View full text Add to dashboard Cite

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“…It has long been recognized as a hormone which is upregulated due to soil water deficit around the root. Salinity stress causes osmotic stress and water deficit, increasing the production of ABA in shoots and roots (He and Cramer 1996;Popova et al 1995). The safflower cultivars respond differently toward salinity stress by increasing Ca 2+ and Cl − to a lesser extent while Na + in their shoots and roots by decreasing the fresh/dry weight ratio (Gadallah 1996).…”

Section: Hormonal Regulationsmentioning

confidence: 99%

Salt and drought stresses in safflower: a review

Hussain

Lyra

Farooq

et al. 2015

Agron. Sustain. Dev.

197

130

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Safflower is one of the oldest cultivated crops, usually grown at a small scale. Safflower is grown for flowers used for coloring, flavoring foods, dyes, medicinal properties, and livestock feed. Safflower is underutilized but gaining attention due to oil yield potential and the ability to grow under high temperatures, drought, and salinity. Salinity and drought have negative effects by disrupting the ionic and osmotic equilibrium of the plant cells. The stress signal is perceived by membranes then transduced in the cell to switch on the stress responsive genes. This review discusses on stress tolerance mechanisms in safflower. Strategies are proposed for enhancing drought and salt resistance in safflower.

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“…Considering that ABA is a key hormone in regulating drought stress responses, the exposure of plants to salinity has been known to induce an increase in ABA levels. For example, ABA increased in leaves of salt stressed Brassica [17], Phaseolus vulgaris [18] and Zea mays [19]. Among the tools used to understand the mechanism of hormone action under abiotic conditions is the ABA application.…”

Section: Effect Of Aba On Plant Growth Responses Under Drought and Samentioning

confidence: 99%

Alterations of Endogenous Hormonal Levels in Plants under Drought and Salinity

Llanes¹,

Andrade²,

Alemano³

et al. 2016

AJPS

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The phytohormones are pivotal chemical messengers produced within the plant that regulate its growth and development, and responses to environmental stimuli. Drought and salinity are adverse environmental factors that disturb the plant hormonal balance. Accordingly, these hormonal fluctuations modify the cellular dynamic and hence they play a central role in regulating plant growth responses to abiotic stresses such as drought and salinity. The present review gives an update about the alterations of endogenous phytohormones such as abscisic acid (ABA), auxins (Aux), cytokinins (CKs), ethylene (ET), gibberellins (GAs), jasmonates (JAs), salicylic acid (SA), brassinosteroids (BRs), strigolactones (SLs) and nitric oxide (NO) that occur as part of the adaptative responses of plant against drought and salt stresses. Better understanding of the endogenous hormonal changes during the plant response to both abiotic stresses will contribute, in part, to the development of stress-tolerant plants.

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Abscisic acid concentrations are correlated with leaf area reductions in two salt-stressed rapid-cycling Brassica species

Cited by 113 publications

References 33 publications

Comparative physiology of salt and water stress

Comparative physiology of salt and water stress

Salt and drought stresses in safflower: a review

Alterations of Endogenous Hormonal Levels in Plants under Drought and Salinity

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