Growth, fruit yield, quality, and water productivity of grape tomato as affected by seed priming and soil application of silicon under drought stress

Chakma, Remi; Saekong, Pantamit; Biswas, Arindam; Ullah, Hayat; Datta, Avishek

doi:10.1016/j.agwat.2021.107055

Cited by 45 publications

(21 citation statements)

References 74 publications

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“…In the present study, the findings show that water deficit severely limits the performance of two cowpea cultivars, even those previously characterized as drought‐tolerant, which was evidenced by reductions in SD, PH, NT, LA, SFM, SDM, RFM, RDM and PDM (Figures 2 and 3). The growth of the root system has been an important factor in maintaining water absorption under water deficit (Chakma et al, 2021; Malik et al, 2021), but it does not seem to have been activated in cowpea plants, which showed prominent reductions in root biomass (Figure 3c,d).…”

Section: Discussionmentioning

confidence: 99%

Silicon alleviates drought damage by increasing antioxidant and photosynthetic performance in cowpea

Leite

Miranda

Rocha³

et al. 2023

J Agronomy Crop Science

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Water deficits have been considered the most restrictive environmental constraint on agricultural production worldwide. The current study aimed to investigate the role of silicon nutrition (Si) in activating defence mechanisms against drought damage in cowpea cultivars. The experiments were carried out in a randomized block design in a 2 × 2 × 4 factorial scheme, corresponding to two cowpea cultivars (BRS Novaera and BRS Tumucumaque), two water regimes (control well‐irrigated and water deficit) and four Si levels (0, 1.0, 2.0 and 4.0 mM). Plant growth and physiological and biochemical indicators were evaluated 28 days after drought imposition. Drought significantly reduced the photosynthetic pigments (Chl b and Chl total), gas exchanges (net photosynthesis, transpiration and stomatal conductance) and, consequently, all growth parameters of cowpea plants compared with well‐irrigated plants. However, Si at 2.0 mM activated critical responses in the BRS Novaera cultivar under drought, almost recovering plant performance and increasing drought tolerance. The beneficial Si‐induced effects were closely related to increased accumulation of Si, carbohydrates and free amino acids that likely promoted osmoregulation and were associated with an improved antioxidant system composed of proline and the activity of SOD, CAT and APX. These metabolic alterations were sufficient to enable enhanced net photosynthesis and plant growth. In conclusion, Si counteracts the deleterious effects of water deficit by efficiently inducing antioxidant defence and photosynthetic performance in Novaera plants. Si nutrition may constitute a potential strategy to cultivate cowpea plants in water‐scarce areas from arid and semiarid regions.

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Section: Discussionmentioning

confidence: 99%

Silicon alleviates drought damage by increasing antioxidant and photosynthetic performance in cowpea

Leite

Miranda

Rocha³

et al. 2023

J Agronomy Crop Science

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“…The seed priming technique appears to be very much effective in water deficit conditions. Chakma et al (2021a) observed that tomato plants primed with silicon showed higher fruit yield and quality as compared to controls under 75% and 100% field capacity. Cucumber plants when primed with ascorbic acid and pyridoxine improved the plant physiological and biochemical attributes under 65 and 80% field capacity.…”

Section: Primingmentioning

confidence: 94%

Alleviation of drought and salt stress in vegetables: crop responses and mitigation strategies

Khalid

Huda²,

Yong³

et al. 2022

Plant Growth Regul

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In recent decades, the demand for vegetables has increased significantly due to the blooming global population. Climate change has affected vegetable production by increasing the frequencies and severity of abiotic and biotic stresses. Among the abiotic stresses, drought and salinity are the major issues that possess severe threats on vegetable production. Many vegetables (e.g., carrot, tomato, okra, pea, eggplant, lettuce, potato) are usually sensitive to drought and salt stress. The defence mechanisms of plants against salt and drought stress have been extensively studied in model plant species and field crops. Better understanding of the mechanisms of susceptibility of vegetables to drought and salt stresses will help towards the development of more tolerant genotypes as a long-term strategy against these stresses. However, the intensity of the challenges also warrants more immediate approaches to mitigate these stresses and enhance vegetable production in the short term. Therefore, this review enlightens the updated knowledge of responses (physiological and molecular) against drought and salinity in vegetables and potentially effective strategies to enhance production. Moreover, we summarized different technologies such as seed priming, genetic transformation, biostimulants, nanotechnology, and cultural practices adopted to enhance vegetable production under drought and salinity stress. We propose that approaches of conventional breeding, genetic engineering, and crop management should be combined to generate drought and salt resistance cultivars and adopt smart cultivation practices for sustainable vegetable production in a changing climate.

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“…Different Si sources used for priming have been summarized in Table 2 . In general, for seed priming, the ratio of 1:5 (w/v) seed weight to solution volume was maintained and seeds were dried before being sown ( Ali et al, 2021 ; Chakma et al, 2021 ). Most of the studies are performed with sodium or potassium silicate.…”

Section: Priming With Siliconmentioning

confidence: 99%

Priming With Silicon: A Review of a Promising Tool to Improve Micronutrient Deficiency Symptoms

Hernández‐Apaolaza

2022

Front. Plant Sci.

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Priming consists of a short pretreatment or preconditioning of seeds or seedlings with different types of primers (biological, chemical, or physical), which activates various mechanisms that improve plant vigor. In addition, stress responses are also upregulated with priming, obtaining plant phenotypes more tolerant to stress. As priming is thought to create a memory in plants, it is impairing a better resilience against stress situations. In today’s world and due to climatic change, almost all plants encounter stresses with different severity. Lots of these stresses are relevant to biotic phenomena, but lots of them are also relevant to abiotic ones. In both these two conditions, silicon application has strong and positive effects when used as a priming agent. Several Si seed priming experiments have been performed to cope with several abiotic stresses (drought, salinity, alkaline stress), and Si primers have been used in non-stress situations to increase seed or seedlings vigor, but few has been done in the field of plant recovery with Si after a stress situation, although promising results have been referenced in the scarce literature. This review pointed out that Si could be successfully used in seed priming under optimal conditions (increased seed vigor), to cope with several stresses and also to recover plants from stressful situations more rapidly, and open a promising research topic to investigate, as priming is not an expensive technique and is easy to introduce by growers.

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Growth, fruit yield, quality, and water productivity of grape tomato as affected by seed priming and soil application of silicon under drought stress

Cited by 45 publications

References 74 publications

Silicon alleviates drought damage by increasing antioxidant and photosynthetic performance in cowpea

Silicon alleviates drought damage by increasing antioxidant and photosynthetic performance in cowpea

Alleviation of drought and salt stress in vegetables: crop responses and mitigation strategies

Priming With Silicon: A Review of a Promising Tool to Improve Micronutrient Deficiency Symptoms

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