Growth of epicotyls, turgor maintenance and osmotic adjustment in pea plants (Pisum sativum L.) subjected to water stress

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

doi:10.1016/s0378-4290(03)00121-7

Cited by 108 publications

(60 citation statements)

References 36 publications

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“…Similar results have been reported by other authors for wheat [31,32], triticale [32], and pea [33].…”

Section: Discussionsupporting

confidence: 92%

Response of coleoptiles to water deficit: growth, turgor maintenance and osmotic adjustment in barley plants (Hordeum vulgare L.)

González¹,

Ayerbe²

2011

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Cereal crop improvement programmes involve the analysis of a great number of lines every year; the availability of a simple, rapid method that would allow the identification of a trait in the early stages of plant development would facilitate the selection process. This work reports two experiments involving the germination of seeds in Petri dishes, performed to study the effect of water deficit on the growth of barley coleoptiles. In one experiment water stress was induced by allowing evaporation from the Petri dishes; in the other water stress was achieved by adding polyethylene glycol 6000.The growth of the control coleoptiles was greater than that of the treatment coleoptiles in all cases, but with differences between the different genotypes. A significant correlation (P < 0.01) was found between the relative growth of the coleoptiles and turgor maintenance in the seedlings. Significant correlations were also seen between the relative growth of the coleoptiles and the osmotic adjustment of the flag leaf (P < 0.05) and the grain weight (P < 0.01) in adult plants. The genotypes that showed the greatest relative growth also showed the greatest capacity for osmotic adjustment in the flag leaf and produced the greatest yields in experiments with adult plants. The results indicate that the growth of coleoptiles subjected to water deficit could be used as a selection criterion in breeding programmes designed to improve the tolerance of barley to drought.

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“…Similar results have been reported by other authors for wheat [31,32], triticale [32], and pea [33].…”

Section: Discussionsupporting

confidence: 92%

Response of coleoptiles to water deficit: growth, turgor maintenance and osmotic adjustment in barley plants (Hordeum vulgare L.)

González¹,

Ayerbe²

2011

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“…Drought results in an increase of soluble carbohydrate pool and this accumulation is mainly due to the hydrolysis of previously stored starch rather than to de novo synthesis (Lee et al, 2008a). The accumulation of sugars would be involved in dehydration tolerance by protecting the macromolecules through the maintenance of s sufficient degree of hydration during water loss (Sánchez et al, 2004 (Lee et al, 2009b). A close relationship between the increase in PR-proteins activity and the decrease in leaf water potential has been also observed in drought stressed white clover.…”

Section: ⅰ Introductionmentioning

confidence: 90%

Lignification in Relation to the Influence of Water-deficit Stress in Brassica napus

Lee¹,

Zhang²,

Kim³

2014

Journal of The Korean Society of Grassland and Forage Science

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To investigate lignification process and its physiological significance under water-deficit condition, the responses of peroxidases, polyphenol oxidase (PPO) and phenylalanine ammonia-lyase (PAL) in relation to leaf water status to the short term of water deficit treatment in the leaves with different maturities in forage rape were measured. The significant decrease in relative water content (RWC) and leaf osmotic potential (Ψπ) were apparent after 5 d of water-deficit treatment. The activity of guaiacol peroxidase (GPOD), ascorbate peroxidase (APOD), coniferyl alcohol peroxidase (CPOD), and syringaldazine peroxidase (SPOD) was depressed especially in middle and old leaves when compared with that of control leaves. On the other hand, in young leaves, a significant increase in CPOD (+34%) and SPOD (+24%) activity as affected by water-deficit treatment was apparent. The activation of PAL and PPO was observed in middle and old leaves for PAL and in young and middle leaves for PPO. These results suggest that peroxidases in middle and old leaves did not involve in lignification under mild water-deficit stress, whereas CPOD and SPOD in young leaves participate in lignification by a coordination with PAL and PPO to incorporate phenol and lignin into the cell walls.

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“…Physiological responses to drought, such as stomatal closure, reduced photosynthetic rates, changes in cellular extensibility, and OA, have been well described (Sá nchez et al, 2004;Hessini et al, 2008Hessini et al, , 2009. Differences in sensitivity to drought between different species and/or cultivars (Zollinger et al, 2006) and between growth stages have also been demonstrated for many plants (Mingeau et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Comparative effect of drought duration on growth, photosynthesis, water relations, and solute accumulation in wild and cultivated barley species

Mejri

Siddique

Saif

et al. 2016

J. Plant Nutr. Soil Sci.

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Drought is a major factor limiting crop production worldwide. Barley is a well-adapted cereal that is largely grown on dry marginal land where water and salinity are the most prevalent environmental stresses. This study was carried out to investigate the effects of drought stress and subsequent recovery on growth, photosynthetic activity, water relations, osmotic adjustment (OA), and solute accumulation of wild (Hordeum maritimum) and cultivated barley (H. vulgare L.). In a pot experiment, 60 d old seedlings were subjected to drought stress for 0, 7, 14, 21, or 28 d, and then re-watered to recover for up to 21 d. Plants were harvested at the end of each of these drought/recovery treatments. Drought significantly reduced fresh and dry weights at the wholeplant level, photosynthetic activities, and solute and water potentials, while increasing leaf Na + and K + concentrations. The adverse effects of drought on growth were more marked in cultivated barley than in wild barley and the reverse was true for photosynthetic activities. During recovery, all wild barley seedlings completely recovered. For cultivated barley seedlings, rehydration had a beneficial effect on growth and photosynthesis, independent of treatment duration, but complete recovery did not occur. The reduction in leaf solute potential at full turgor in drought-stressed barley, relative to the control, suggests active OA which was more significant in wild barley than in cultivated barley. OA was mainly due to the accumulation of inorganic (K + in cultivated barley and Na + in wild barley) and organic (soluble sugars and proline) solutes. The results suggest that OA is an important component of the drought-stress adaptation mechanism in wild barley, but is not sufficient to contribute to drought tolerance in cultivated barley. In the latter species, the results show that even short periods (as little as 7 d) of water deficit stress had considerable long-term effects on plant growth.

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Growth of epicotyls, turgor maintenance and osmotic adjustment in pea plants (Pisum sativum L.) subjected to water stress

Cited by 108 publications

References 36 publications

Response of coleoptiles to water deficit: growth, turgor maintenance and osmotic adjustment in barley plants (Hordeum vulgare L.)

Response of coleoptiles to water deficit: growth, turgor maintenance and osmotic adjustment in barley plants (Hordeum vulgare L.)

Lignification in Relation to the Influence of Water-deficit Stress in Brassica napus

Comparative effect of drought duration on growth, photosynthesis, water relations, and solute accumulation in wild and cultivated barley species

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