The role of solute accumulation, osmotic adjustment and changes in cell wall elasticity in drought tolerance in Ziziphus mauritiana (Lamk.)

Clifford, S. C.; Arndt, Stefan; Corlett, J. E.; Joshi, S.; Sankhlá, N.; Popp, Marianne; Jones, Hamlyn G.

doi:10.1093/jxb/49.323.967

Cited by 155 publications

(85 citation statements)

References 40 publications

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“…This could be due to the inhibition of the incorporation of amino acids into proteins in NaCl treatments (Handa et al, 1983). The accumulation of amino acids could play a role in osmotic adjustment and serve as a source of carbon and nitrogen (Ayoub et al, 1992;Bolarin et al, 1995;Chiang and Dandekar, 1995;Clifford et al, 1998).…”

Section: Discussionmentioning

confidence: 99%

Response of Vicia faba plants to the interactive effect of sodium chloride salinity and salicylic acid treatment

Tammam

2003

Acta Agronomica Hungarica

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The leaf area, fresh and dry matter, and water content in the roots and shoots of broad bean were significantly reduced with a rise in salinity. The protein components in the roots and shoots decreased in response to salinity, whereas the proline content significantly increased. The sodium content in both roots and shoots increased with increasing salinity, whereas potassium and calcium decreased. Salinity induced an increase in total amino acids and ammonia.Spraying with salicylic acid (SA) increased the three growth parameters, stimulated the synthesis of protein at all salinities, retarded the accumulation of proline, retarded the accumulation of Na + and increased the content of K + and Ca 2+. The total content of amino acids was about 1.6-fold the untreated control and there was a drastic increase in the content of threonine and serine.The electrophoretic pattern of SA-treated seedlings showed 21 polypeptides compared to 12 in the salt-treated ones. Salinity plus SA resulted in the disappearance of 4 polypeptides. In addition, two peptides with molecular masses of 99 and 102 kDa appeared in the gel in both NaCl-treated seedlings and NaCl+SA-treated seedlings.

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Section: Discussionmentioning

confidence: 99%

Response of Vicia faba plants to the interactive effect of sodium chloride salinity and salicylic acid treatment

Tammam

2003

Acta Agronomica Hungarica

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“…Decrease in tissue elasticity has been identified in several species of Eucalyptus as a mechanism contributing to turgor maintenance under drought conditions [15,56,57], and after drought periods during wintertime [15]. Recently Clifford et al [4] proposed that in species with high osmotic adjustment capacity, it is more advantageous to have rigid cell walls as these may facilitate the maintenance of cell integrity during the rehydration occurring after the drought ends. In contrast to SS plants, CS plants experienced an increase in the θ and a decrease in T M/DM, facts that probably facilitated their osmotic adjustment capacity [6,32].…”

Section: Factormentioning

confidence: 99%

Drought conditioning improves water status, stomatal conductance and survival ofEucalyptus globulussubsp. bicostataseedlings

2006

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-We investigated the responses of drought preconditioning in three provenances of Eucalyptus globulus subsp. bicostata (Maiden, Blakely and J.Simm) J.B. Kirkp. seedlings and assessed their effects after transplanting. After one-month moderate drought conditioning treatment, seedlings evidenced osmotic adjustment, reduction in size, leaf area, shoot/root ratio and stomatal conductance. Inter-provenance variation was found in osmotic adjustment capacity. During the first stages of transplanting period, pretreated plants showed improved water status and gas exchange capacity under drought conditions; this initial superiority was lost later on. Non-conditioned seedlings also developed morphological and physiological adjustments that allowed them to perform similarly to conditioned plants. Although preconditioning did not favour seedlings growth, it was effective in enhancing survival, an attribute correlated to shoot/root ratio and relative water content. Inter-provenances variation was found in several of the physiological and morphological responses to drought, but it was not possible to relate that variation to the dryness of the seed origin site. These results show the advantage of drought preconditioning in Eucalyptus globulus subsp. bicostata which result in better behaviour and greater survival after transplanting, factors closely associated with the establishment success.provenances / drought acclimation / transplanting / tissue water relations / morphological characteristics Résumé -Le conditionnement par la sécheresse améliore l'état hydrique, la conductance stomatique et la survie des semis d'Eucalyptus globulus subsp. biscotata. Nous avons étudié les réponses à un préconditionnement par la sécheresse des semis de trois provenances d'Eucalyptus globulus subsp. biscotata (Maiden, Blakely et J. Simm) J.B. Kirkp. et nous avons évalué leurs effets après transplantation. Après un mois de conditionnement par une sécheresse modérée, les semis ont montré un ajustement osmotique et une réduction de taille, de surface foliaire, de rapport partie aérienne/partie racinaire et de conductance stomatique. Nous avons trouvé des différences de capacité d'ajustement osmotique entre les provenances. Au cours des premiers jours suivant la transplantation et pendant les premières étapes de cette période, le préconditionnement par la sécheresse a permis aux semis traités d'avoir une amélioration de leur état hydrique et de leurs échanges gazeux. Ensuite leur supériorité initiale a disparu. Les semis non conditionnés ont aussi développé des changements morphologiques et physiologiques qui ont augmenté leur tolérance à la sécheresse et qui ont permis une performance similaire à celle des plants conditionnés. Cependant leurs rapports partie aérienne/partie racinaire ont été encore plus élevés. Bien que le préconditionnement n'ait pas favorisé la croissance des plants traités, il a été particulièrement efficace pour ce qui concerne la survie des plants, un attribut corrélé au rapport partie aérienne/partie racinaire et à ...

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“…1a). This suggests that the physiological and morphological adaptations of Z. nummularia that permit it to survive in arid regions (Clifford et al, 1998;Arndt et al, 2001) may also make it a suitable species for plantations in drought prone marginal lands (Pandey et al, 2010). The ability of Z. nummularia to sustain higher rates of G s at lower levels of soil water availability than C. citriodora may be related to differences in the water-uptake and transport systems between the two species (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…To fully exploit marginal land types for wood production it may be necessary to identify alternative tree species that may be more adapted to growth and survival under water-deficit conditions (Allen et al, 2010). The genus Ziziphus grows in arid areas of Africa and Asia and is composed of shrubs and trees that possess structural and physiological adaptations to prevent waterloss (Clifford et al, 1998;Arndt et al, 2001). Z. nummularia has been suggested as possible fruit and woodcrop species for growth in water-limited areas (Pandey et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…Z. nummularia possesses physiological (Figs. 1 and 6) and morphological adaptations (Clifford et al, 1998;Arndt et al, 2001;Haworth and McElwain, 2008) to the negative effects of drought stress. The apparent capacity of Z. nummularia leaves to fully exploit favourable growth conditions, combined with the ability to tolerate periods of water deficit, are highly desirable in a biomass crop species grown in drought prone rain-fed marginal lands.…”

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confidence: 99%

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Divergent Gas-exchange, Physiological, Isotopic and Compositional Responses of Two Wood-crop Species to Water Deficit: Ziziphus nummularia and Corymbia citriodora

Mahmood¹,

Saeed²,

Saleem³

et al. 2015

IJAB

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To cite this paper: Mahmood, T., A. Saeed, A.R. Saleem, M. Haworth and M. Centritto, 2015. Divergent gas-exchange, physiological, isotopic and compositional responses of two wood-crop species to water deficit: AbstractWe assessed the response to drought in Corymbia citriodora, a fast growing wood-crop with high levels of water-loss, and Ziziphus nummularia, a tree species that occurs in arid areas of Asia and a potential alternative wood-crop plantation species in drought-prone regions. Z. nummularia was able to sustain higher levels of stomatal conductance at lower levels of soil water availability than C. citriodora. The leaves of Z. nummularia also contained higher levels of the antioxidant peroxidase, offering enhanced protection from drought induced oxidative stress. The carbon isotopic and nitrogen concentration of C. citriodora foliage was strongly affected by decreasing soil water availability, but a compositional effect was only apparent in Z. nummularia leaves at the lowest level of soil water. The higher leaf levels of stomatal conductance and nitrogen are indicative of relatively high assimilation rates in Z. nummularia, suggesting that this species is capable of fully exploiting brief periods where conditions are limited for growth. These attributes, in combination with its inherent tolerance to drought, may make Z. nummularia a suitable wood crop species for rain-fed plantations in drought-prone areas.

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The role of solute accumulation, osmotic adjustment and changes in cell wall elasticity in drought tolerance in Ziziphus mauritiana (Lamk.)

Cited by 155 publications

References 40 publications

Response of Vicia faba plants to the interactive effect of sodium chloride salinity and salicylic acid treatment

Response of Vicia faba plants to the interactive effect of sodium chloride salinity and salicylic acid treatment

Drought conditioning improves water status, stomatal conductance and survival ofEucalyptus globulussubsp. bicostataseedlings

Divergent Gas-exchange, Physiological, Isotopic and Compositional Responses of Two Wood-crop Species to Water Deficit: Ziziphus nummularia and Corymbia citriodora

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