Water Stress and Apical Morphogenesis in Barley

Husain, Indriati; Aspinall, D.

doi:10.1093/oxfordjournals.aob.a084377

Cited by 57 publications

(28 citation statements)

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“…In agreement with a temporary downregulation in mitotic activity in the shoot apex during salt-stress adaptation (1% NaCl), the number of rosette leaves and (Schuppler et al 1998) has been reported in sorghum and wheat whereas in tobacco (Clough and Milthorpe 1975) and barley (Nicholls and May 1963;Husain and Aspinall 1970), a decrease in leaf initiation rate has been found.…”

Section: Discussionsupporting

confidence: 73%

Expression of cell cycle regulatory genes and morphological alterations in response to salt stress in Arabidopsis thaliana

Burssens

Himanen

Cotte

et al. 2000

Planta

175

115

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Hyperosmotic stress severely affects plant growth and development. To examine the effect of salt stress on cell cycle activity in Arabidopsis thaliana (L.) Heynh., the transcriptional regulation of a cyclin-dependent kinase, CDC2aAt, and two mitotic cyclins, Arath;CycB1;1 and Arath;CycA2;1, was studied by using the beta-glucuronidase (gus) reporter gene. Moreover, the mRNA abundance of these cell cycle genes as well as CDC2bAt were monitored during salt stress. Upon NaCl treatment, the promoter activities and transcript levels of all cell cycle genes diminished initially in the shoot apex and were subsequently induced during salt-stress adaptation. Additionally, the promoter activities of CDC2aAt and CycA2;1 decreased in the vascular cylinder of the root in correlation with reduced lateral root formation. In the root tips, a regression of CDC2aAt, CycA2;1, and CycB1;1:gus expression was observed, concomitant with a shrinkage of the root meristem and inhibition of root growth. Our data indicate that salt stress interferes with cell cycle regulation at the transcriptional level, resulting in an adaptive growth response.

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Section: Discussionsupporting

confidence: 73%

Expression of cell cycle regulatory genes and morphological alterations in response to salt stress in Arabidopsis thaliana

Burssens

Himanen

Cotte

et al. 2000

Planta

175

115

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“…This underlines the sensitivity of the shoot apex to water stress (Dai et al. 2007) and is similar to the drought‐elicited reduction of new primordia formation in the apical meristem of barley (Husain & Aspinall 1970). In addition, we observed highly significant effects of water stress across T. repens populations, with reductions of leaf size by about 50% (P < 0.001), of leaf mass and leaf appearance rate by approximately 30% (P < 0.001) and stolon elongation rate by 60% (P < 0.001).…”

Section: Resultssupporting

confidence: 68%

Response of Trifolium repens to UV‐B radiation: morphological links to plant productivity and water availability

Hofmann

Campbell

2011

Plant Biology

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This study used nine populations of Trifolium repens L. (white clover) to investigate possible relationships between plant morphological attributes and responses to ultraviolet-B (UV-B) radiation. Plants were exposed to 0 or 13.3 kJ·m(-2) ·day(-1) UV-B for 12 weeks. Drought was applied in parallel to these treatments during the last 4 weeks of the experiment to test whether limited moisture availability would alter morphological UV-B responses. UV-B affected plant morphology under well-watered conditions, reducing leaf size by 15%, leaf number by 5% and stolon elongation by 19%. The number of leaf primordia in the apical bud was decreased by 4% under UV-B, and by 12% under drought. In drought-exposed plants, leaf size was reduced by 50%, leaf number by 30% and stolon elongation by 60%. In addition, drought reduced specific leaf area (SLA) by 33% and increased leaf percentage dry mass (PDM) by 40%. UV-B-induced reduction in plant biomass in the T. repens populations was associated with higher plant productivity and this was further linked to larger leaf size as well as to lower PDM. In conclusion, the findings suggest that morphological attributes conferring fast potential growth under productive conditions carry a cost in the form of lower biomass accumulation under UV-B.

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“…Indeed, experiments with annual crop plants (Nicholls & May 1963;Salter & Goode 1967;Gates 1968;Husain & Aspinall 1970) show that the reverse may well apply and moisture stress may, if anything, slightly delay the time of initiation, though a small decrease in time to anthesis has been reported in some cases (e.g. Salter & Goode 1967;Slatyer 1973).…”

Section: Introductionmentioning

confidence: 99%

Effects of Moisture Stress on the Growth and Reproduction of Three Annual Species from an Arid Region of Western Australia

Mott¹,

McComb²

1975

The Journal of Ecology

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Water Stress and Apical Morphogenesis in Barley

Cited by 57 publications

References 0 publications

Expression of cell cycle regulatory genes and morphological alterations in response to salt stress in Arabidopsis thaliana

Expression of cell cycle regulatory genes and morphological alterations in response to salt stress in Arabidopsis thaliana

Response of Trifolium repens to UV‐B radiation: morphological links to plant productivity and water availability

Effects of Moisture Stress on the Growth and Reproduction of Three Annual Species from an Arid Region of Western Australia

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