scholarly journals Study of Some Physiological Responses of Different Pomegranate (Punica Granatum L.) Cultivars under Drought Stress to Screen for Drought Tolerance

2020 ◽  
Vol 20 (sup2) ◽  
pp. 1798-1813
Author(s):  
Maryam Tatari ◽  
Esmaeil Jadidi ◽  
Emad Shahmansouri
Keyword(s):  
Drought Stress ◽  
Drought Tolerance ◽  
Physiological Responses ◽  
Punica Granatum ◽  
Punica Granatum L

scholarly journals Physiological Responses under Drought Stress of Improved Drought-Tolerant Rice Lines and their Parents

2018 ◽  
Vol 46 (2) ◽  
pp. 679-687 ◽  
Author(s):  
Preeyanuch LARKUNTHOD ◽  
Noppawan NOUNJAN ◽  
Jonaliza L SIANGLIW ◽  
Theerayut TOOJINDA ◽  
Jirawat SANITCHON ◽  
...  
Keyword(s):  
Drought Stress ◽  
Drought Tolerance ◽  
Water Status ◽  
Physiological Responses ◽  
High Water ◽  
Recurrent Parent ◽  
Potential Candidate ◽  
Substitution Lines ◽  
Chromosome Segment Substitution Lines ◽  
Drought Tolerant

Many of the economically important rice cultivars including ‘Khao Dawk Mali 105’ (KDML105) or jasmine rice, one of the world’s famous rice exported from Thailand suffers from drought due to erratic rainfalls and limited irrigation. To improve drought tolerance and reserve genetic background of KDML105, chromosome segment substitution lines (CSSL) containing drought tolerant quantitative trait loci (DT-QTL) has been previously developed by backcrossing between KDML105 and drought tolerant donor, IR58586-F2-CA-143 (DH212). To understand the physiological responses related to drought tolerance in CSSL lines compared to parents, two CSSLs namely CSSL1-16 and CSSL1-18, respectively were used in this study. Twenty-one-d-old hydroponically grown plants were subjected to 20% PEG for 0, 7, 14 d and then recovered from stress for 3 d. The results indicated that CSSL lines especially, CSSL1-16 showed better performance under drought stress compared to their recurrent parent. Drought tolerance superior CSSL1-16 line was indicated by high water status (high relative water content and leaf water potential), good osmotic adjustment, high proline and greater membrane stability. Moreover, this line was able to resume growth after stress recovery whereas other lines/cultivar could not recover. Similarly, drought tolerant donor showed high water status suggesting that well-maintained plant water status was associated with drought tolerant trait. It could be concluded that the highest drought tolerant line was CSSL1-16 followed by DH212, CSSL1-18 and KDML105. It would be interesting to go further into introgressed section in CSSL1-16 to identify potential candidate genes in DT-QTL for breeding drought tolerant rice in the future.

scholarly journals The interplay between miR156/SPL13 and DFR/WD40–1 regulate drought tolerance in alfalfa

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Biruk A. Feyissa ◽  
Muhammad Arshad ◽  
Margaret Y. Gruber ◽  
Susanne E. Kohalmi ◽  
Abdelali Hannoufa
Keyword(s):  
Drought Stress ◽  
Drought Tolerance ◽  
Anthocyanin Biosynthesis ◽  
Physiological Responses ◽  
Biological Functions ◽  
Altered Expression ◽  
Transcript Levels ◽  
Squamosa Promoter Binding Protein ◽  
Fine Tune

Abstract Background Developing Medicago sativa L. (alfalfa) cultivars tolerant to drought is critical for the crop’s sustainable production. miR156 regulates various plant biological functions by silencing SQUAMOSA-PROMOTER BINDING PROTEIN-LIKE (SPL) transcription factors. Results To understand the mechanism of miR156-modulated drought stress tolerance in alfalfa we used genotypes with altered expression levels of miR156, miR156-regulated SPL13, and DIHYDROFLAVONOL-4-REDUCTASE (DFR) regulating WD40–1. Previously we reported the involvement of miR156 in drought tolerance, but the mechanism and downstream genes involved in this process were not fully studied. Here we illustrate the interplay between miR156/SPL13 and WD40–1/DFR to regulate drought stress by coordinating gene expression with metabolite and physiological strategies. Low to moderate levels of miR156 overexpression suppressed SPL13 and increased WD40–1 to fine-tune DFR expression for enhanced anthocyanin biosynthesis. This, in combination with other accumulated stress mitigating metabolites and physiological responses, improved drought tolerance. We also demonstrated that SPL13 binds in vivo to the DFR promoter to regulate its expression. Conclusions Taken together, our results reveal that moderate relative miR156 transcript levels are sufficient to enhance drought resilience in alfalfa by silencing SPL13 and increasing WD40–1 expression, whereas higher miR156 overexpression results in drought susceptibility.

Screening pomegranate (Punica granatum L.) genotypes for drought tolerance using physiological and phytochemical characteristics

Fruits ◽  
2020 ◽  
Vol 75 (3) ◽  
pp. 130-140
Author(s):  
S. Faraji ◽  
◽  
M. Hadadinejad ◽  
V. Abdossi ◽  
T. Basaki ◽  
...  
Keyword(s):  
Drought Tolerance ◽  
Punica Granatum ◽  
Punica Granatum L

The physiological responses of various pomegranate cultivars to drought stress and recovery in order to screen for drought tolerance

2017 ◽  
Vol 217 ◽  
pp. 164-172 ◽  
Author(s):  
Mohammadreza Pourghayoumi ◽  
Davood Bakhshi ◽  
Majid Rahemi ◽  
Ali Akbar Kamgar-Haghighi ◽  
Ali Aalami
Keyword(s):  
Drought Stress ◽  
Drought Tolerance ◽  
Physiological Responses

Physiological and metabolomic analysis of Punica granatum (L.) under drought stress

Planta ◽  
2015 ◽  
Vol 243 (2) ◽  
pp. 441-449 ◽  
Author(s):  
Stefano Catola ◽  
Giovanni Marino ◽  
Giovanni Emiliani ◽  
Taravat Huseynova ◽  
Mirza Musayev ◽  
...  
Keyword(s):  
Drought Stress ◽  
Punica Granatum ◽  
Metabolomic Analysis ◽  
Punica Granatum L

scholarly journals Determination of Fruit Cracking Rates in Some Pomegranate (Punica granatum L.) Genotypes Growed Non-Irrigated Conditions

2022 ◽  
Vol 9 (sp) ◽  
pp. 2635-2640
Author(s):  
Emine Açar ◽  
Melike Cengiz ◽  
Yıldız Aka Kaçar ◽  
Ahsen Işık Özgüven
Keyword(s):  
Drought Stress ◽  
Punica Granatum ◽  
Stress Factors ◽  
Soluble Solids ◽  
Economic Losses ◽  
Subtropical Climate ◽  
Resistance Level ◽  
Fruit Cracking ◽  
Significant Difference ◽  
Punica Granatum L

Pomegranate (Punica granatum L.) is a tropical and subtropical climate plant with high economic value and nutritional content. Having valuable phytochemicals in terms of health caused an increase in demand for pomegranate consumption and this situation accelerated pomegranate production. However, global warming and climate changes are among the factors limiting the production of pomegranate. Especially abiotic stress factors caused by adverse ecological conditions cause significant economic losses in pomegranate production. Drought stress, which is one of these negativities, causes fruit cracking problem, which is one of the important problems in pomegranate production. Minimizing the fruit cracking problem, which causes economic losses, is possible by breeding varieties that are resistant to under non-irrigated conditions. Determining the resistance of the cultivars to be used in breeding programs against fruit cracking will allow the development of elite cultivars. For this purpose, it was aimed to determine the fruit cracking rates of 30 different pomegranate genotypes in the Pomegranate Genetic Collection of Çukurova University, Faculty of Agriculture, Department of Horticulture, under non-irrigated conditions. A correlation was made between the cracking rates of the genotypes and the amount of soluble solids content (SSC). According to the correlation analysis between the cultivars, there is no statistically significant difference between the SSC and the cracking rate. However, a weak negative correlation was determined between SSC-cracking rate (-0,1132). In the light of the pomological data obtained, it was determined that 8 pomegranate genotypes grown under non-irrigated conditions had a fruit cracking rate of 40 % - 85 %, cracking rates were below 10 % in 8 pomegranate genotypes and no fruit cracking was observed in 6 genotypes. As a result of the analysis, it was observed that drought stress was effective on the fruit cracking rate or the exacerbation of the fruit cracking rate, but the resistance level of some genotypes against the fruit cracking problem was high.

Biochemical and Physiological Responses of Three Pomegranate (Punica granatum L.) Cultivars Grown Under Cr6+ Stress

2019 ◽  
Vol 20 (1) ◽  
pp. 1-11
Author(s):  
O. Dichala ◽  
I. Therios ◽  
M. Koukourikou-Petridou ◽  
A. Papadopoulos ◽  
T. Sotiropoulos
Keyword(s):  
Physiological Responses ◽  
Punica Granatum ◽  
Punica Granatum L

scholarly journals AtCRY2 Negatively Regulates the Functions of AtANN2 and AtANN3 in Drought Tolerance by Affecting Their Subcellular Localization and Transmembrane Ca2+ Flow

2021 ◽  
Vol 12 ◽  
Author(s):  
Ting Liu ◽  
Leyan Du ◽  
Qiushi Li ◽  
Jingda Kang ◽  
Qi Guo ◽  
...  
Keyword(s):  
Gene Expression ◽  
Plasma Membrane ◽  
Drought Stress ◽  
Ion Channels ◽  
Drought Tolerance ◽  
Subcellular Localization ◽  
Calcium Binding ◽  
Physiological Responses ◽  
Ion Flow ◽  
Long Day

Annexins are a multifunctional class of calcium-binding proteins in plants, and their physiological functions and regulation in response to drought stress remain to be elucidated. Here, we found that AtANN2 and AtANN3 conferred to drought tolerance under short-day and long-day conditions, respectively. Under their functional photoperiod, AtANN2 and AtANN3 gene expression was enhanced in the mannitol-treated roots, and their encoded proteins were rapidly targeted to the plasma membrane, and mediated significant Ca2+ flows across the plasma membrane. Cryptochromes as photoreceptors can not only sense the photoperiod and regulate ion channels on the plasma membrane to influence ion flow but also induce downstream physiological responses. AtCRY2 repressed the functions of AtANN2 and AtANN3 by affecting their plasma membrane localization and inhibited AtANN2- and AtANN3-dependent transmembrane Ca2+ flow in response to drought stress. Taken together, these results uncover a mechanism linking Annexins-AtCRY2 to transmembrane Ca2+ flow and resulting in enhanced drought tolerance in Arabidopsis.

Sign in / Sign up

Export Citation Format

Share Document