Genetic and Molecular Aspects of Plant Response to Drought in Annual Crop Species

Petrarulo, M.; Vita, Pasquale De; Mastrangelo, A. M.

doi:10.5772/31352

Cited by 7 publications

(7 citation statements)

References 209 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Adaptive mechanisms promoting the survival of plants have been grouped into three categories; drought escape, drought avoidance and drought tolerance [46]. Drought escape is the ability of plants to accomplish their life cycle before the development of soil and plant water deficit.…”

Section: Drought Tolerancementioning

confidence: 99%

Physiological Responses of Selected Vegetable Crop Species to Water Stress

Nemeskéri

Helyes

2019

Agronomy

View full text Add to dashboard Cite

The frequency of drought periods influences the yield potential of crops under field conditions. The change in morphology and anatomy of plants has been tested during drought stress under controlled conditions but the change in physiological processes has not been adequately studied in separate studies but needs to be reviewed collectively. This review presents the responses of green peas, snap beans, tomatoes and sweet corn to water stress based on their stomatal behaviour, canopy temperature, chlorophyll fluorescence and the chlorophyll content of leaves. These stress markers can be used for screening the drought tolerance of genotypes, the irrigation schedules or prediction of yield.

show abstract

Section: Drought Tolerancementioning

confidence: 99%

Physiological Responses of Selected Vegetable Crop Species to Water Stress

Nemeskéri

Helyes

2019

Agronomy

View full text Add to dashboard Cite

show abstract

“…De Leonardis, Petrarulo, De Vita, and Mastrangelo (2012) consider that the improvement of drought tolerance represented, and still represents, one of the major objectives of plant breeding. Sunflower genotypes may perform differently under different drought levels, and genotypic differences in drought tolerance could be, at least in part, attributed to the ability of plants to acclimate and induce different defence mechanisms under severe water stress (Vassilevska‐Ivanova et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

The effects of seed priming with sodium hydrosulphide on drought tolerance of sunflower (Helianthus annuus L.) in germination and early growth

Ocvirk

Špoljarević

Kristić

et al. 2020

Annals of Applied Biology

View full text Add to dashboard Cite

Sunflower seeds (hybrid Luka) were primed with water (hydropriming) or sodium hydrosulphide (NaHS) solutions (0.1, 0.5, 1.0 and 1.5 mM NaHS) and subsequently dried to initial moisture content. Unprimed (control) and primed seeds were germinated in a growth chamber on paper towels moistened with water or polyethylene glycol (PEG) 6000 solutions (2.5, 5.0 and 10%), mimicking different drought stress levels. To evaluate the response of the primed seeds to drought in the germination stage, the germination energy (GE), germination rate (SG), seedling fresh mass (SW), hydrogen peroxide and free proline content (PRO), as well as lipid peroxidation rate (malondialdehyde; MDA) were established. The results show strong effects of the imposed drought stress and the metabolic response to oxidative stress through lower germinability and proline accumulation in seedlings. NaHS priming showed some positive effects on seed germination depending on stress level and the concentration of NaHS. Sunflower seeds were also germinated in pots filled with soil, at optimal (70% of field water capacity [FWC 70%]) and drought conditions (FWC 30%), in natural outdoors conditions. When plantlets developed the first pair of leaves, the number of plants (emergence rate [ER]), shoot mass (SM) and leaves mass (LM) were determined, as well as the total activities of catalase (CAT), ascorbate peroxidase (APX), glutathione reductase (GR) and dehydroascorbate reductase (DHAR). There was a significant influence of an interaction between drought stress and priming, whereas drought stress inhibited plant emergence and early growth (SW and LW), and strong antioxidative enzymatic response to drought stress was clearly established in the leaves. Although seed priming showed some influence on enzyme activities, it was mostly related to seed hydropriming effects, while NaHS seed priming was less effective, influencing only DHAR. Altogether, the results imply that sunflower seed priming with NaHS may not have a prolonged impact on the antioxidative defence mechanism based on CAT and ascorbate/glutathione cycle during sunflower early growth in drought conditions.

show abstract

“…Breeding for earliness is an effective strategy for increasing the yield stability in regions such as the Mediterranean, where plants are exposed to increased drought in the summer time. Early flowering can help in drought avoidance; however, it is not effective in mitigating the drought stress once it occurs [9].…”

Section: The Physiology Of Drought Responsementioning

confidence: 99%

“…Plants have, during evolution, acquired different modes of adaptation to harsh environmental conditions, including drought stress [5,8,9]. Some plants escape the latter by early maturation and, in consequence, more rapid development of seeds, thus completing their life cycle before the onset of prolonged and severe drought.…”

Section: Introductionmentioning

confidence: 99%

Drought Stress Response in Agricultural Plants: A Case Study of Common Bean (Phaseolus vulgarisL.)

Sedlar¹,

Kidrič²,

Šuštar-Vozlič³

et al. 2020

Drought - Detection and Solutions

View full text Add to dashboard Cite

Drought is one of the major threats to common bean (Phaseolus vulgaris L.), affecting its growth and productivity and, thus, contributing to considerable losses in yield in many regions worldwide. The development of varieties tolerant of drought stress has, therefore, become one of the primary goals in many common bean breeding programs. Plants have developed various mechanisms of their adaptation, to a greater or lesser extent, to drought. These are expressed, on the molecular level, by changes of gene expression and of protein content, together with responses at physiological and morphological levels. The response of common bean to drought is still not sufficiently well characterized due to its genetic complexity and its diverse, often ambiguous, phenotypic effects. Understanding these mechanisms is thus of fundamental importance for developing varieties that are better adapted to such stress conditions. In this chapter, we present research that provides an insight into the morpho-physiological adaptation and its underlying molecular changes in common bean plants exposed to drought. We include our contribution to establishing the basis for breeding of common bean with greater tolerance to this abiotic stress that uses molecular markers and identification of quantitative trait loci (QTLs).

show abstract

Genetic and Molecular Aspects of Plant Response to Drought in Annual Crop Species

Cited by 7 publications

References 209 publications

Physiological Responses of Selected Vegetable Crop Species to Water Stress

Physiological Responses of Selected Vegetable Crop Species to Water Stress

The effects of seed priming with sodium hydrosulphide on drought tolerance of sunflower (Helianthus annuus L.) in germination and early growth

Drought Stress Response in Agricultural Plants: A Case Study of Common Bean (Phaseolus vulgarisL.)

Contact Info

Product

Resources

About