Wild type and transgenic tomato plants were exposed to drought stress lasting 18 days.
Pastoral communities in rural Botswana have historically been and continue to be exposed to drought hazards (Holm and Morgan 1985; Mogotsi et al. 2011a).
This parameter is thought to play a vital role in the process of photoinhibition when plants are exposed to drought and salt stresses (Maxwell and Johnson, 2000).
An insignificant difference was found between the non-stressed plants and the plants that were exposed to drought stress during the tillering stage.
Transgenic tobacco plants expressing ScVTE2.1 under the control of stress-inducible promoters showed increased levels of α-tocopherol when exposed to drought conditions.
Of these, we confirmed the differential expression patterns of 14 genes in root samples exposed to drought stress using quantitative real-time PCR.
Originating from flood-prone ecosystems frequently exposed to drought, where it was domesticated, rice was selected for various rainfed environments including dryland (upland, free draining, aerobic) and rainfed lowland ecosystems which are at least temporarily flooded.
Leaves developed under moderate shade displayed a lower ability to preserve water balance, thus suffering from a greater decline in net CO2 assimilation than leaves acclimated to full sunlight, when subsequently exposed to drought stress.
Furthermore, the survival of Koeleria seedlings in the -catechin treatment decreased much faster after being exposed to drought than seedlings in control soils (Fig. 7).
Kaplan-Meier Survival Analysis demonstrated significantly lower survival among Koeleria seedlings exposed to drought in the -catechin treatment than in the control (Log-rank Chi-square = 7.224; df = 1; P = 0.007; Breslow Chi-square = 3.297; df = 1; P = 0.069; Tarone-Ware Chi-square = 4.703; df = 1; P = 0.030).
After three months, the plants were exposed to drought stress by withholding watering.
