Effects of the interaction between drought and shade on water relations, gas exchange and morphological traits in cork oak (Quercus suber L.) seedlings

Aranda, Ismael; Castro, L.; Pardos, Marta; Gil, Luis; Pardos, J.A.

doi:10.1016/j.foreco.2005.02.012

Cited by 144 publications

(114 citation statements)

References 74 publications

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“…In addition, Ψπ 100 was lower under high light (HL1 and HL2), but only for moderate water-stressed seedlings. As suggested by Aranda et al [7] the additive effect of high irradiance and low water availability can start mechanisms of drought tolerance such as a decrease on Ψπ 0 . Active accumulation of solutes decreases Ψπ 0 , acting to sustain a gradient in Ψ between plant protoplasm and the soil solution [8].…”

Section: (A) (B)mentioning

confidence: 85%

Water relations of cork oak (Quercus suber L.) seedlings in response to shading and moderate drought

Pardos¹,

Clavijo²,

Aranda³

et al. 2005

Ann. For. Sci.

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-The interactive effects of light and drought on water relations and soluble sugars were addressed on Quercus suber L. seedlings grown under the combination of four irradiances and two soil water contents. Leaf water potentials at predawn and midday were lower for water stressed seedlings, independently of light environment. Osmotic potentials at full (Ψπ 100 ) and zero turgor (Ψπ 0 ) decreased with drought, under the four light treatments. However, the decline was greater with the development of water stress under the two treatments of higher light availability. The higher soluble sugar concentrations in seedlings grown under higher irradiances provoked a decrease of Ψπ 0. The decrease in Ψπ 100 and Ψπ 0 in moderate stressed seedlings was accompanied by an increase in ε max . The lower ability for osmotic adjustment in seedlings grown under moderate water stress and low light environment suggested a lower efficiency in developing physiological mechanisms for drought tolerance in shade-grown seedlings.cork oak / drought / light / osmotic adjustment / soluble sugars Résumé -Relations hydriques des semis de chêne-liège (Quercus suber L.) en réponse à l'ombre et à une sécheresse modérée. Les effets interactifs de la lumière et de la sécheresse sur les relations hydriques et les sucres solubles ont été étudiés sur des plantules de Quercus suber L. qui ont poussé sous la combinaison de quatre éclairements différents et de deux contenus en eau du sol. Les potentiels hydriques foliaires mesurés l'un avant l'aube et l'autre à midi étaient plus bas pour les plantules subissant un stress hydrique indépendamment du niveau d'éclairement. La pression osmotique à pleine turgescence (Ψπ 100 ) et la pression osmotique à turgescence nulle (Ψπ 0 ) ont diminué avec la sécheresse sous les quatre éclairements. Cependant, les diminutions étaient plus grandes pour les plantules soumises à un stress hydrique et à un éclairement élevé. La plus grande concentration de sucres solubles des plantules ayant poussé sous un plus grand éclairement a provoqué la diminution de Ψπ 0 . La diminution de Ψπ 100 et de Ψπ 0 pour les plantules ayant poussé sous une sécheresse modérée a été accompagnée d'une augmentation de ε max . La moindre capacité pour l'ajustement osmotique des plantules ayant poussé sous un stress hydrique modéré et une faible intensité lumineuse a montré une plus faible efficacité pour le développement des mécanismes physiologiques de tolérance à la sécheresse de ces plantules ayant poussé à l'ombre.chêne-liège / sécheresse / lumière / ajustement osmotique / sucres solubles

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Section: (A) (B)mentioning

confidence: 85%

Water relations of cork oak (Quercus suber L.) seedlings in response to shading and moderate drought

Pardos¹,

Clavijo²,

Aranda³

et al. 2005

Ann. For. Sci.

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“…Many other studies reported morphological, physiological and biochemical changes caused by the combination of drought and shade (Sack, 2004;Aranda et al, 2005;Yin et al, 2013). There are various opinions related to the effects caused by drought and shade.…”

Section: Morphological Physiological and Biochemical Responses Undermentioning

confidence: 99%

Plants responses to drought and shade environments

Kwon¹,

Woo²

2016

Afr. J. Biotechnol.

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Water and light are the most important environements for plants' growth. These environemts are critical factors needed not only for the survival of plants but also their production. When plants are exposed to drought condition, they change in their anatomical, physiological and biochemical properties. Drought affects plants wildly from their cell structure to growth. It causes higher plastoglobuli, lower starch grain, distortion of thylakoids, disrupted grana and swelling of chloroplast. Plants grown under enhanced light, have increased palisade parenchyma, thicker leaf, higher biomass, increased photosynthesis, lower contents of chlorophyll, carotenoid and nitrogen.

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“…Light and water availability are main environmental factors affecting plant survival and growth, and determining the distribution of plants at global scales (Ashton et al, 2006;Quero et al, 2006). In some previous studies, biochemical, physiological and structural responses of seedlings to the combination of drought and shade have been reported, and the results have showed both negatively and positively correlated but also independent interaction effects between shade and drought (Aranda et al, 2005;Huang et al, 2008;Duan et al, 2009). However, the underlying mechanisms are poorly known.…”

Section: Introductionmentioning

confidence: 99%

Effect of drought and ABA on growth, photosynthesis and antioxidant system of Cotinus coggygria seedlings under two different light conditions

Zhao

Duan

et al. 2011

Environmental and Experimental Botany

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Effects of the interaction between drought and shade on water relations, gas exchange and morphological traits in cork oak (Quercus suber L.) seedlings

Cited by 144 publications

References 74 publications

Water relations of cork oak (Quercus suber L.) seedlings in response to shading and moderate drought

Water relations of cork oak (Quercus suber L.) seedlings in response to shading and moderate drought

Plants responses to drought and shade environments

Effect of drought and ABA on growth, photosynthesis and antioxidant system of Cotinus coggygria seedlings under two different light conditions

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