Effect of moringa extract on the leaf anatomy and yield potential of tomato infected by <i>Alternaria solani</i>

Mvumi, Culver; Marais, D.; Ngadze, Elizabeth; Toit, E.S. du; Tsindi, Albert

doi:10.1080/02571862.2018.1446223

Cited by 9 publications

(10 citation statements)

References 6 publications

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“…Large cells enable an increase in the surface area of chloroplasts facing intercellular airspaces, facilitating CO 2 arrival at carboxylation sites 47 . Here, positive correlation between FW and LT was significant on tomato plants grown under 100% ASW, supporting the results found by Mvumi et al 43 . Thicker leaves are also common traits on high-yielding genotypes of several plant species, including common beans 50 , rice 51 , and cashew 52 .…”

Section: Discussionsupporting

confidence: 92%

“…Of all adaptative mechanisms involved with S. pennellii's survival in drought-prone environments 10 , lower g min 13 and thicker leaves 24,43 show potential use in tomato breeding programs for drought resistance due to their association with plant yield.…”

Section: Discussionmentioning

confidence: 99%

“…Here, positive correlation between FW and LT was significant on tomato plants grown under 100% ASW, supporting the results found by Mvumi et al . 43 . Thicker leaves are also common traits on high-yielding genotypes of several plant species, including common beans 50 , rice 51 , and cashew 52 .…”

Section: Discussionmentioning

confidence: 99%

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Evaluation of anatomical and physiological traits of Solanum pennellii Cor. associated with plant yield in tomato plants under water-limited conditions

Dariva

Copati

Pessoa

et al. 2020

Sci Rep

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Although intensively studied, few works had looked into S. pennellii’s ability to cope with water-deficit conditions from a breeding point of view. In this study, we assessed potential traits of S. pennellii, that had previously been linked to high yields in other plant species, under long-term water-limited conditions and made a parallel with plant yield. For this purpose, the drought-resistant tomato genotypes IL 3–5 and IL 10–1, and the drought-sensitive IL 2–5 and IL 7–1 at seed level, together with both parents the S. pennellii accession LA 716 and the cultivar M82 were kept at 50 and 100% ASW throughout the growing season. Our findings confirm the superiority of LA 716 under water-limited conditions compared to the other S. lycopersicum genotypes in terms of plant water status maintenance. Percentual reduction on plant yield was higher in IL 3–5 and IL 10–1 than in M82 plants, indicating no correlation between drought resistance on germination and plant productive stages. A strong positive correlation was found between fruit yield and A, gs, and Ψleaf at 50% ASW, suggesting these traits as important selection criteria. LT and gmin, LA 716’s most promising traits, did not show a linear correlation with fruit yield under low water regimes. This study unravels traits behind tomato performance under water-limited conditions and should work as guidance for breeders aiming at developing drought-resistant tomato cultivars.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

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Evaluation of anatomical and physiological traits of Solanum pennellii Cor. associated with plant yield in tomato plants under water-limited conditions

Dariva

Copati

Pessoa

et al. 2020

Sci Rep

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“…Although synthetic chemicals are widely used to manage this pest but, intensive and continuous use of these chemicals has resulted in the development of pest resistance, resurgence to these chemicals and may also leave hazardous effects on humans and the environment [8]. In contrast, botanical insecticides are relatively safe to some extent and are effective substitutes of these chemicals which play a fundamental role in the field of biopesticides.…”

Section: Introductionmentioning

confidence: 99%

Spinasterol, 22,23-Dihydrospinasterol and Fernenol from Citrullus Colocynthis L. with Aphicidal Activity against Cabbage Aphid Brevicoryne Brassicae L.

Ahmed

Qin

et al. 2020

Molecules

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Brevicoryne brassicae is a problematic pest in cabbage and other field crops. Synthetic pesticides are used to control this pest, but they are injurious for human health and the environment. The present study aimed to purify and identify the active compounds from Citrullus colocynthis leaves with an appraisal of their efficacy against B. brassicae. Separation and purification were performed via different chromatographic techniques. Molecular analysis and chemical structures were recognized by mass spectrum (MS) and nuclear magnetic resonance (NMR), respectively. Moreover, in vitro and in vivo aphicidal activity was assessed using various concentrations, i.e., 6.25, 12.5, 25 and 50 µg/mL at 12, 24, 48 and 72 h exposure. The outcome shows that mass spectrum analyses of the purified compounds suggested the molecular formulae are C30H50O and C29H50O, C29H48O. The compounds were characterized as fernenol and a mixture of spinasterol, 22,23-dihydrospinasterol by 1H-NMR and 13C-NMR spectrum analysis. The toxicity results showed that the mixture of spinasterol and 22,23-dihydrospinasterol showed LC50 values of 32.36, 44.49 and 37.50 µg/mL by contact, residual and greenhouse assay at 72 h exposure, respectively. In contrast, fernenol recorded LC50 values as 47.99, 57.46 and 58.67 µg/mL, respectively. On the other hand, spinasterol, 22,23-dihydrospinasterol showed the highest mortality, i.e., 66.67%, 53.33% and 60% while, 30%, 23.33% and 25% mortality was recorded by fernenol after 72 h at 50 µg/mL by contact, residual and greenhouse assay, respectively. This study suggests that spinasterol, 22,23-dihydrospinasterol are more effective against B. brassicae which may be introduced as an effective and suitable substitute of synthetic chemical pesticides.

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“…Natural plants are venerated source of phytochemical compounds responsible for biological activities and are employed in pharmacological as well as agrochemical industry. Although, synthetic chemicals are easily available source which are widely used as antioxidant, antimicrobial, antifungal and pesticidal purposes, however, their rigorous and continuous use has caused resistance development in pest and also poses harmful effects on human's health and the environmental concerns [1].…”

Section: Introductionmentioning

confidence: 99%

Antioxidant, Antifungal and Insecticidal Activity of Triterpenoids Spinasterol, 22,23-Dihydrospinasterol Isolated from Colocynthis (Citrullus colocynthis L.) Leaves.

Ahmed

Qin

2020

Preprint

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Terpenoids from natural plants resources are valuable for diverse biological activities which exhibited important part in medical and agrochemicals industry. This study aimed to assess the antioxidant, antifungal and insecticidal activity of a mixture of Spinasterol, 22,23-dihydrospinasterol isolated from Citrullus colocynthis leaves. 1, 1-diphenyl-2-picrylhydrazyl (DPPH) was used to assess the antioxidant activity whereas, antifungal activity was tested by mycelium growth inhibition assay on three pathogenic fungi Magnaporthe grisea, Rhizoctonia solani and Phytophthora infestans. Insecticidal activity against Brevicoryne brassicae was also determined by using In-vitro and In-vivo assays. The outcome of the study exposed that Spinasterol, 22, 23-dihydrospinasterol afforded prominent antioxidant activity even at lower concentrations i.e. 19.98, 31.52, 36.61 and 49.76% at 0.78, 3.0, 12.5 and 50µgmL-1 respectively. However, moderate fungicidal activity of Spinasterol, 22; 23-dihydrospinasterol was recorded as being EC50 values 129.5 and 206.1µgmL-1 against R. solani and M. grisea respectively. On the other hand, Boscalid and Carbendazim being a positive control proved highly effective against all fungi except for M. grisea and P. infestans with EC50 values 868 and 272109µgmL-1 respectively. The pronounced insecticidal activity of Spinasterol, 22,23-dihydrospinasterol was afforded via residual as well as greenhouse assay being LC50 values as 42.46, 54.86, 180.9 µgmL-1 and 32.71, 42.46 and 173.8µgmL-1 at 72, 48 and 24 h respectively. The study concluded that isolated compound Spinasterol, 22,23-dihydrospinasterol possess promising antioxidant and aphicidal activity with moderate fungicidal activity which could be a suitable candidate as an alternative to synthetic pesticidal agents.

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Effect of moringa extract on the leaf anatomy and yield potential of tomato infected by Alternaria solani

Cited by 9 publications

References 6 publications

Evaluation of anatomical and physiological traits of Solanum pennellii Cor. associated with plant yield in tomato plants under water-limited conditions

Evaluation of anatomical and physiological traits of Solanum pennellii Cor. associated with plant yield in tomato plants under water-limited conditions

Spinasterol, 22,23-Dihydrospinasterol and Fernenol from Citrullus Colocynthis L. with Aphicidal Activity against Cabbage Aphid Brevicoryne Brassicae L.

Antioxidant, Antifungal and Insecticidal Activity of Triterpenoids Spinasterol, 22,23-Dihydrospinasterol Isolated from Colocynthis (Citrullus colocynthis L.) Leaves.

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