Turgor maintenance, osmotic adjustment and soluble sugar and proline accumulation in 49 pea cultivars in response to water stress

Sánchez, Francisco J.; Manzanares, M.; Andres, E. F. de; Tenorio, J. L.; Ayerbe, L.

doi:10.1016/s0378-4290(98)00125-7

Cited by 261 publications

(173 citation statements)

References 47 publications

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“…This would also help to conserve its Ψ w (table 1) and to maintain its net photosynthetic rate and growth at a relatively high level when plants were grown under salt stress conditions. The higher salt-tolerance of BR5033 may also be associated to other factors, such as lower metabolic (energetic) cost spent with osmoregulation and/or an adequate compartmentalization of inorganic solutes in the vacuoles and of organic solutes in the cytosol (Hajibagheri et al, 1987;Sánchez et al, 1998).…”

Section: Discussionmentioning

confidence: 99%

Effects of salt stress on plant growth, stomatal response and solute accumulation of different maize genotypes

Neto

Prisco

Enéas-Filho

et al. 2004

Braz. J. Plant Physiol.

152

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Seeds from eight different maize genotypes (BR3123, BR5004, BR5011, BR5026, BR5033, CMS50, D766 and ICI8447) were sown in vermiculite, and after germination they were transplanted into nutrient solution or nutrient solution containing 100 mmol.L -1 of NaCl and placed in a greenhouse. During the experimental period plant growth (dry matter, shoot to root dry mass ratio, leaf area, relative growth rate, and net assimilation rate), leaf temperature, stomatal conductance, transpiration, predawn water potential, sodium, potassium, soluble amino acids and soluble carbohydrate contents were determined in both control and salt stressed plants of all genotypes studied. Salt stress reduced plant growth of all genotypes but the genotypes BR5033 and BR5011 were characterized as the most salt-tolerant and salt-sensitive, respectively. Stomatal response of the salt-tolerant genotype was not affected by salinity. Among the studied parameters, shoot to root dry mass ratio, leaf sodium content and leaf soluble organic solute content showed no relation with salt tolerance, i.e., they could not be considered as good morpho-physiological markers for maize salt tolerance. In contrast, sodium and soluble organic solutes accumulation in the roots as a result of salt stress appeared to play an important role in the acclimation to salt stress of the maize genotypes studied, suggesting that they could be used as physiological markers during the screening for salt tolerance.Keywords: growth analysis; osmoregulation; salinity; transpiration; Zea mays, water relations;.Efeito do estresse salino sobre o crescimento, resposta estomática e acúmulo de solutos em diferentes genótipos de milho: Sementes de oito genótipos de milho (BR3123, BR5004, BR5011, BR5026, BR5033, CMS50, D766 e ICI8447) foram semeadas em vermiculita e, após a germinação, transplantadas para vasos contendo solução nutritiva ou solução nutritiva com 100 mmol.L -1 de NaCl, em casa de vegetação. Durante o período experimental avaliaram-se, em plantas de todos os genótipos, sob condições de controle e estresse salino, os seguintes parâmetros: crescimento (matéria seca, relação de matéria seca parte aérea/raiz, área foliar, taxa de crescimento relativo e taxa de assimilação líquida), temperatura foliar, condutância estomática, transpiração, potencial hídrico antemanhã e teores de sódio, potássio, aminoácidos solúveis e carboidratos solúveis. O estresse salino reduziu o crescimento das plantas de todos os genótipos, sendo o BR5033 e o BR5011 caracterizados como tolerante e sensível ao estresse salino respectivamente. A resposta estomática do genótipo tolerante não foi influenciada pela salinidade. Entre os parâmetros estudados, a relação de matéria seca parte aérea/raiz e os teores de sódio e de solutos orgânicos nas folhas não mostraram relação com a tolerância à salinidade, isto é, não foram considerados bons marcadores morfo-fisiológicos para a tolerância à salinidade em milho. Em contraste, os teores de sódio e de solutos orgânicos nas raízes mostraram desempenhar um important...

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Section: Discussionmentioning

confidence: 99%

Effects of salt stress on plant growth, stomatal response and solute accumulation of different maize genotypes

Neto

Prisco

Enéas-Filho

et al. 2004

Braz. J. Plant Physiol.

152

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“…Turner et al (2007) did not find better yield of chickpea under terminal drought due to osmotic adjustment. Sánchez et al (1998) found that osmotic adjustment partially explained turgor maintenance in pea cultivars under drought leading to higher yield. Jongdee et al (2002) could not find a direct relation between variation in osmotic adjustment among rice genotypes and their yield performance under drought.…”

Section: Breeding For Dehydration Tolerancementioning

confidence: 98%

Management of crop water under drought: a review

Bodner

Nakhforoosh

Kaul

2015

Agron. Sustain. Dev.

455

234

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Drought is a predominant cause of low yields worldwide. There is an urgent need for more water efficient cropping systems facing large water consumption of irrigated agriculture and high unproductive losses via runoff and evaporation. Identification of yield-limiting constraints in the plant-soil-atmosphere continuum are the key to improved management of plant water stress. Crop ecology provides a systematic approach for this purpose integrating soil hydrology and plant physiology into the context of crop production. We review main climate, soil and plant properties and processes that determine yield in different water-limited environments. From this analysis, management measures for cropping systems under specific drought conditions are derived. Major findings from literature analysis are as follows. (1) Unproductive water losses such as evaporation and runoff increase from continental in-season rainfall climates to storage-dependent winter rainfall climates. Highest losses occur under tropical residual moisture regimes with short intense rainy season. (2) Sites with a climatic dry season require adaptation via phenology and water saving to ensure stable yields. Intermittent droughts can be buffered via the root system, which is still largely underutilised for better stress resistance. (3) At short-term better management options such as mulching and date of seeding allow to adjust cropping systems to site constraints. Adapted cultivars can improve the synchronisation between crop water demand and soil supply. At long term, soil hydraulic and plant physiological constraints can be overcome by changing tillage systems and breeding new varieties with higher stress resistance. (4) Interactions between plant and soil, particularly in the rhizosphere, are a way towards better crop water supply. Targeted management of such plant-soil interactions is still at infancy.We conclude that understanding site-specific stress hydrology is imperative to select the most efficient measures to mitigate stress. Major progress in future can be expected from crop ecology focussing on the management of complex plant (root)-soil interactions.

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“…These cultivars, all semi-dwarf, were selected on the basis of previous studies according to their possible tolerance or susceptibility to water stress in controlled conditions (Grzesiak 1997;Sánchez et al 1998;Iglesias-García et al 2012a, b).…”

Section: Plant Materials and Growth Conditionsmentioning

confidence: 99%

Assessment of field pea (Pisum sativum L.) grain yield, aerial biomass and flowering date stability in Mediterranean environments

Iglesias-García

Prats

Flores³

et al. 2017

Crop Pasture Sci.

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Mediterranean environments are of most interest to study pea adaptability to terminal drought conditions especially in the current context of global climate change. In our work we have tested 9 pea cultivars in five South European and North African locations, characterized by different agro climatic conditions within the Mediterranean climate. Data were processed through the additive main effects and multiplicative interaction (AMMI) analysis. Grain yield, aboveground biomass and flowering date were assessed within each Mega Environment (ME) with parametric and non-parametric methods, establishing ranks for the genotypes within each condition attending to their stability parameters and mean values. The field analysis revealed HR1 as a wide adapted genotype, whereas others such as Desso showed the best adaptation in South Mediterranean areas. Our results also highlighted the potential interest of these genotypes and others (i.e. Messire and ZP108) in breeding programs and further studies on drought tolerance.Additional Keywords: dry pea, phenology, Genotype × Environment interaction, drought tolerance Pea behaviour in Mediterranean field environments 5 IntroductionDry pea (Pisum sativum L.) is the most widely grown temperate grain legume in Europe and the second-most in the world (FAOSTAT 2013), being a versatile and inexpensive protein source for animal feeding with a widely acknowledged beneficial role in cropping systems (Drinkwater et al., 1998; Badgley et al., 2006;Nemecek et al. 2008). In spite of these advantages, dry pea acreage shows a constantly decreasing trend at a world level from 10.3 million ha in 1962 to 6.3 ha in 2012 (Rubiales and Mikic 2015).Yield variability and instability are the major problems for pea both within and between sites and seasons due to a poor adaptability and a low tolerance to biotic and abiotic stress (Moot et al. 1995;Jacobsen et al. 2012). Significant efforts have been made in pea breeding for adaptability to continental and oceanic conditions (Cousin 1997). In contrast, little efforts have been paid to improve adaptability to Mediterranean environments with mild winters and dry springs, where spring pea types are autumn sown and challenged by different stresses (Rubiales et al. 2009). As a result, pea cultivation is particularly low in the Mediterranean Basin and recently released pea cultivars are poorly adapted to Mediterranean environments (Rubiales 2015). This is somehow surprising as the East Mediterranean and the West Asia are the primary centre of diversity for pea, where wild forms, such as P. fulvum Sm. and P. sativum subsp. elatius (M. Bieb.) Asch. and Graebn can still be found growing today (Rubiales et al. 2011; and where pea once played a very important role in human diets, as witnessed by the first attested ancient DNA extraction from any legume species Medović et al. 2011).In field conditions, the development of pea genotypes producing high and stable seed yield is most decisive (Cousin, 1997;Rubiales et al. 2011;Smýkal et al. 2012), albeit high...

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Turgor maintenance, osmotic adjustment and soluble sugar and proline accumulation in 49 pea cultivars in response to water stress

Cited by 261 publications

References 47 publications

Effects of salt stress on plant growth, stomatal response and solute accumulation of different maize genotypes

Effects of salt stress on plant growth, stomatal response and solute accumulation of different maize genotypes

Management of crop water under drought: a review

Assessment of field pea (Pisum sativum L.) grain yield, aerial biomass and flowering date stability in Mediterranean environments

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