Journal ArticleDOI
Whole-plant responses to salinity
Rana Munns,Annie Termaat +1 more
TLDR
This paper discusses whole-plant responses to salinity in order to answer the question of what process limits growth of non-halophytes in saline soils and suggests that a message from the root is regulating leaf expansion.Abstract:
This paper discusses whole-plant responses to salinity in order to answer the question of what process limits growth of non-halophytes in saline soils. Leaf growth is more sensitive to salinity than root growth, so we focus on the process or processes that might limit leaf expansion. Effects of short-term exposure (days) are considered separately from long-term exposure (weeks to years). The answer in the short term is probably the water status of the root and we suggest that a message from the root is regulating leaf expansion. The answer to what limits growth in the long term may be the maximum salt concentration tolerated by the fully expanded leaves of the shoot; if the rate of leaf death approaches the rate of new leaf expansion, the photosynthetic area will eventually become too low to support continued growth.read more
Citations
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Journal ArticleDOI
Comparative physiology of salt and water stress
TL;DR: 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, to understand the processes that give rise toolerance of salt, as distinct from tolerance of osmotic stress.
Journal ArticleDOI
Plant cellular and molecular responses to high salinity.
TL;DR: Evidence for plant stress signaling systems is summarized, some of which have components analogous to those that regulate osmotic stress responses of yeast, some that presumably function in intercellular coordination or regulation of effector genes in a cell-/tissue-specific context required for tolerance of plants.
Journal ArticleDOI
Salt tolerance and salinity effects on plants: a review.
TL;DR: The ability of plants to tolerate salt is determined by multiple biochemical pathways that facilitate retention and/or acquisition of water, protect chloroplast functions, and maintain ion homeostasis as mentioned in this paper.
Journal ArticleDOI
Physiological processes limiting plant growth in saline soils: some dogmas and hypotheses
TL;DR: It is argued that salts taken up by the plant do not directly control plant growth by affecting turgor, photosynthesis or the activity of any one enzyme, and rather, the build-up of salt in old leaves hasten their death, and the loss of these leaves affects the supply of assimilates or hormones to the growing regions and thereby affects growth.
Journal ArticleDOI
Salinity–mineral nutrient relations in horticultural crops
TL;DR: The relationship between salinity and mineral nutrition of horticultural crops are extremely complex and a complete understanding of the intricate interactions involved would require the input from a multidisciplinary team of scientists.
References
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Journal ArticleDOI
The mechanism of salt tolerance in halophytes
TL;DR: The objective was to establish an experimental procedure and show direct AFM measurements that unequivocally can be assigned as a mode of action for the conversion of NalK to Na6(SO4)(SO3) during the cycling process.
Book ChapterDOI
Physiological Responses to Moderate Water Stress
Kent J. Bradford,T. C. Hsiao +1 more
TL;DR: The main body, which first reviews and analyzes selected responses to water stress and then examines the integrated adaptive behavior of whole plants, is presented.
Journal ArticleDOI
Effects of salt stress on the growth, ion content, stomatal behaviour and photosynthetic capacity of a salt-sensitive species, Phaseolus vulgaris L.
TL;DR: Salinization of plants was found to alter the δ13C value of leaves of Phaseolus by up to 5‰ and this change agreed quantitatively with that predicted by the theory relating carbon-isotope fractionation to the corresponding measured intercellular CO2 concentration.
Journal ArticleDOI
Regulation of photosynthesis by sink activity–the missing link
TL;DR: Abbreviations: ADP, adenosine diphosphate, ATP, adenoine triphosphate; FBP, fructose 1,6bisph phosphate; F6p, fructose 6-phosphates; GlP, glucose 1-ph phosphates; G6P, sugars 6- phosphate ; P, phosphorus; PGA, 3-phphosphoglycerate; Pi, inorganic orthophosphate.