Salt tolerance of potato genetically engineered with the Atriplex canescens BADH gene

Ali, A.; Ali, Qasim; Iqbal, Mohammad S.; Nasir, Idrees Ahmad; Wang, X.

doi:10.32615/bp.2019.080

Cited by 14 publications

(6 citation statements)

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“…Potato is cultivated globally and very sensitive to salt stress, and more than 60% crop loss is caused abiotic stresses including salt (Upadhyaya et al, 2011;Xu et al, 2014;Shafi et al, 2017). To improve potato yield and quality under salt stress condition, many transgenic potato plants have been developed using different genes with different modes of action (Shafi et al, 2017;Wang et al, 2019;Ali et al, 2020). Many osmoprotectant genes like P 5 CS, mtlD, and AtBADH have been transferred to potato, which significantly improves the salt tolerance under salt stress (Karthikeyan et al, 2011;Rahnama et al, 2011;Zhang et al, 2011).…”

Section: Transgenic Vegetables For Salt Stress Tolerancementioning

confidence: 99%

Approaches Involved in the Vegetable Crops Salt Stress Tolerance Improvement: Present Status and Way Ahead

et al. 2022

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Salt stress is one of the most important abiotic stresses as it persists throughout the plant life cycle. The productivity of crops is prominently affected by soil salinization due to faulty agricultural practices, increasing human activities, and natural processes. Approximately 10% of the total land area (950 Mha) and 50% of the total irrigated area (230 Mha) in the world are under salt stress. As a consequence, an annual loss of 12 billion US$ is estimated because of reduction in agriculture production inflicted by salt stress. The severity of salt stress will increase in the upcoming years with the increasing world population, and hence the forced use of poor-quality soil and irrigation water. Unfortunately, majority of the vegetable crops, such as bean, carrot, celery, eggplant, lettuce, muskmelon, okra, pea, pepper, potato, spinach, and tomato, have very low salinity threshold (ECt, which ranged from 1 to 2.5 dS m–1 in saturated soil). These crops used almost every part of the world and lakes’ novel salt tolerance gene within their gene pool. Salt stress severely affects the yield and quality of these crops. To resolve this issue, novel genes governing salt tolerance under extreme salt stress were identified and transferred to the vegetable crops. The vegetable improvement for salt tolerance will require not only the yield influencing trait but also target those characters or traits that directly influence the salt stress to the crop developmental stage. Genetic engineering and grafting is the potential tool which can improve salt tolerance in vegetable crop regardless of species barriers. In the present review, an updated detail of the various physio-biochemical and molecular aspects involved in salt stress have been explored.

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Section: Transgenic Vegetables For Salt Stress Tolerancementioning

confidence: 99%

Approaches Involved in the Vegetable Crops Salt Stress Tolerance Improvement: Present Status and Way Ahead

et al. 2022

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“…The different transgenic studies provided significant insight into transgenes in enhancing salt tolerance in potato plants by altering enzymatic activity, physiological activity, and growth parameters (Table 1). Tolerant to salinity and tolerance related to number of promoters in transgenic lines [178] Recently, clustered, regularly interspaced, short palindromic repeats (CRISPR)/CRISPRassociated protein (CRISPR/Cas) systems have been engineered and extensively employed for genome engineering purposes [179,180]. Precise genetic manipulations, using the CRISPR system, have shown unprecedented potential in generating the desired plant phenotype in several crops [181].…”

Section: Genetic Engineering Approach To Improve Salt Tolerance In Potatomentioning

confidence: 99%

Salinity Stress in Potato: Understanding Physiological, Biochemical and Molecular Responses

Chourasia

Lal

Tiwari

et al. 2021

Life

122

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Among abiotic stresses, salinity is a major global threat to agriculture, causing severe damage to crop production and productivity. Potato (Solanum tuberosum) is regarded as a future food crop by FAO to ensure food security, which is severely affected by salinity. The growth of the potato plant is inhibited under salt stress due to osmotic stress-induced ion toxicity. Salinity-mediated osmotic stress leads to physiological changes in the plant, including nutrient imbalance, impairment in detoxifying reactive oxygen species (ROS), membrane damage, and reduced photosynthetic activities. Several physiological and biochemical phenomena, such as the maintenance of plant water status, transpiration, respiration, water use efficiency, hormonal balance, leaf area, germination, and antioxidants production are adversely affected. The ROS under salinity stress leads to the increased plasma membrane permeability and extravasations of substances, which causes water imbalance and plasmolysis. However, potato plants cope with salinity mediated oxidative stress conditions by enhancing both enzymatic and non-enzymatic antioxidant activities. The osmoprotectants, such as proline, polyols (sorbitol, mannitol, xylitol, lactitol, and maltitol), and quaternary ammonium compound (glycine betaine) are synthesized to overcome the adverse effect of salinity. The salinity response and tolerance include complex and multifaceted mechanisms that are controlled by multiple proteins and their interactions. This review aims to redraw the attention of researchers to explore the current physiological, biochemical and molecular responses and subsequently develop potential mitigation strategies against salt stress in potatoes.

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“…Previous studies have shown that plants with glycine betaine deficiency exhibit a low tolerance for heat and salinity [ 31 , 32 , 33 ]. A method for introducing the BADH gene into plants with a defect in the glycine betaine pathway that reduces their salt–stress resistance, such as Arabidopsis, Ammopiptanthus nanus, maize, potato, Persian walnut, wheat, etc., has been proposed [ 34 , 35 , 36 , 37 , 38 , 39 ]. With the continuous development of transgenic plant varieties, monitoring the environment after their large-scale cultivation has received increasing attention in the past 20 years, especially insect-resistant or herbicide-tolerant crops [ 40 , 41 , 42 , 43 , 44 , 45 , 46 ].…”

Section: Discussionmentioning

confidence: 99%

A Three-Year Plant Study of Salt-Tolerant Transgenic Maize Showed No Effects on Soil Enzyme Activity and Nematode Community

Zeng

Pei

Song

et al. 2022

Life

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The environmental effects of genetically modified crops are now a global concern. It is important to monitor the potential environmental impact of transgenic corn after commercial release. In rhizosphere soil, plant roots interact with soil enzymes and microfauna, which can be affected by the transgenes of genetically modified crops. To determine the long-term impact of transgenic plant cultivation, we conducted a field study for 3 consecutive years (2018–2020) and observed the enzyme activities and nematode populations in plots planted with transgenic maize BQ-2, non-transgenic wild-type maize (Qi319), and inbred line B73. We took soil samples from three cornfields at four different growth stages (V3, V9, R1, and R6 stages); determined soil dehydrogenase, urease, and sucrase activities; and collected and identified soil nematodes to the genus level. The results demonstrated seasonal variations in dehydrogenase, urease, and sucrase activities. However, there was a consistent trend of change. The generic composition and diversity indices of the soil nematodes did not significantly differ, although significant seasonal variation was found in the individual densities of the principal trophic groups and the diversity indices of the nematodes in all three cornfields. The results of the study suggest that a 3-year cultivation of transgenic corn had no significant effects on soil enzyme activity and the soil nematode community. This study provides a theoretical basis for the environmental impact monitoring of transgenic corn.

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Salt tolerance of potato genetically engineered with the Atriplex canescens BADH gene

Cited by 14 publications

References 50 publications

Approaches Involved in the Vegetable Crops Salt Stress Tolerance Improvement: Present Status and Way Ahead

Approaches Involved in the Vegetable Crops Salt Stress Tolerance Improvement: Present Status and Way Ahead

Salinity Stress in Potato: Understanding Physiological, Biochemical and Molecular Responses

A Three-Year Plant Study of Salt-Tolerant Transgenic Maize Showed No Effects on Soil Enzyme Activity and Nematode Community

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