Plant Water Relations: Absorption, Transport and Control Mechanisms

Chavarria, Geraldo; Santos, Henrique Pessoa dos

doi:10.5772/33478

Cited by 54 publications

(63 citation statements)

References 80 publications

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“…No processo fotossintético, a água é requerida na liberação de prótons e elétrons da etapa fotoquímica, bem como na regulação da abertura estomática, possibilitando a absorção de dióxido de carbono e a mobilização de fotoassimilados (CHAVARRIA & SANTOS, 2012). Nesse contexto, além da obtenção de indivíduos mais tolerantes, a restrição hídrica pelo melhoramento vegetal, torna-se fundamental o manejo adequado do solo, visando à máxima retenção e disponibilização de água às plantas, buscando alcançar altos níveis de produtividade.…”

Section: Introductionunclassified

Restrição fotossintética de plantas de soja sob variação de disponibilidade hídrica

Chavarria

Durigon²,

Klein

et al. 2015

Cienc. Rural

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Section: Introductionunclassified

Restrição fotossintética de plantas de soja sob variação de disponibilidade hídrica

Chavarria

Durigon²,

Klein

et al. 2015

Cienc. Rural

Self Cite

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“…Furthermore, when salts are present in the soil solution, they cause nutrient imbalances, inducing inhibition in the uptake of essential nutrients from the roots [107][108][109][110]. Other consequences of salt stress include metabolism alteration, such as hormonal changes, reduced enzyme activity and impaired photosynthesis [10,111].…”

Section: Water Relations Gas Exchange and Osmotic Regulation And Relmentioning

confidence: 99%

“…This water movement is proportional to a driving force and in inverse proportion to resistance encountered through the soil-plant system. Transpiration creates the internal conditions under which water is absorbed by the root system and transported to the canopy [107]. As water is lost by transpiration, leaf water potential and the pressure in the xylem are reduced.…”

Section: Water Relations Gas Exchange and Osmotic Regulation And Relmentioning

confidence: 99%

Plant Responses to Salt Stress: Adaptive Mechanisms

Acosta‐Motos¹,

Ortuño²,

Bernal‐Vicente³

et al. 2017

Preprint

375

200

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This review deals with the adaptive mechanisms that plants can implement to cope with the challenge of salt stress. Plants tolerant to NaCl implement a series of adaptations to acclimate to salinity, including morphological, physiological and biochemical changes. These changes include increases in the root/canopy ratio and in the chlorophyll content in addition to changes in the leaf anatomy that ultimately lead to preventing leaf ion toxicity, thus maintaining the water status in order to limit water loss and protect the photosynthesis process. Furthermore, we deal with the effect of salt stress on photosynthesis and chlorophyll fluorescence and some of the mechanisms thought to protect the photosynthetic machinery, including the xanthophyll cycle, photorespiration pathway, and water-water cycle. Finally, we also provide an updated discussion on salt-induced oxidative stress at the subcellular level and its effect on the antioxidant machinery in both salt-tolerant and salt-sensitive plants. The aim is to extend our understanding of how salinity may affect the physiological characteristics of plants.

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“…It is known that, there is a decrease in the photochemical activity of photosynthesis, rubisco enzyme activity and the accumulation of secondary metabolites when plants are under water deficit stress as well as abscisic acid and solutes increase due to water reduction. These factors reduce stomatal conductance and consequently photosynthetic activity which ultimately resulted in a reduction in the synthesis of proteins and cell walls, as well as a decrease in the rate of cell expansion (Chavarria & dos Santos, 2012 Vol. 8, No.…”

Section: Straw Yield and Its Related Charactersmentioning

confidence: 99%

Yield and Quality Traits of Some Flax Cultivars as Influenced by Different Irrigation Intervals

Rashwan¹,

Mousa²,

El-Sabagh³

et al. 2016

JAS

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Flax is a potential winter crop for Egypt that can be grown for both seed and fiber. The study was conducted during two successive winter seasons of 2013/14 and 2014/15 in the experimental farm of El-Gemmeiza Agricultural Research Station, Agriculture Research Centre, Egypt. The objective of this work was to evaluate the effect of irrigation intervals (25, 35 and 45) on the straw, seed, oil, fiber yields and quality of flax cultivars (Sakha1, Giza9 and Giza10). Irrigation intervals significantly influenced all studied traits except oil percentage. Irrigated flax plants every 35 days gave the maximum values for all traits, while irrigation every 45 days gave the minimum values. In respect to cultivars, significant differences were found in most yield and quality characters. Furthermore, the performance of Sakha 1 cultivar was superior in main stem diameter, biological, straw yields per faddan, seed index, seed, oil yields per faddan and oil percentage. Meanwhile, Giza 10 cultivar highly significantly out yielded Giza9 and Sakha1 in plant height, fiber fineness, fiber length, total fiber percentage and fiber yield per faddan. The interactions between irrigation intervals and flax cultivars were highly significant for all traits. Based on the results, Sakha1 cultivar recorded the maximum values for main stem diameter, biological, straw yields per faddan, seed, oil yields per faddan and oil percentage and Giza 10 recorded the maximum values for plant height, fiber fineness, fiber length, total fiber percentage and fiber yield per faddan under irrigation of plants every 35 days.

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Plant Water Relations: Absorption, Transport and Control Mechanisms

Cited by 54 publications

References 80 publications

Restrição fotossintética de plantas de soja sob variação de disponibilidade hídrica

Restrição fotossintética de plantas de soja sob variação de disponibilidade hídrica

Plant Responses to Salt Stress: Adaptive Mechanisms

Yield and Quality Traits of Some Flax Cultivars as Influenced by Different Irrigation Intervals

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