Non-stomatal factors limit cotton photosynthesis under silverleaf whitefly stress

Lin, Tong-Bao; Schwartz, Amnon; Saranga, Yehoshua

doi:10.1034/j.1399-3054.1999.100307.x

Cited by 13 publications

(5 citation statements)

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“…1). A similar trend of diurnal P n changes has been obtained previously in our screenhouse experiments (Lin et al 1999b), albeit with higher P n values and greater SLW effects relative to the greenhouse measurements recorded here.…”

Section: Photosynthetic Performancesupporting

confidence: 90%

“…As suggested above, the higher hexose and sucrose concentrations in infested source leaves might inhibit the expression of genes encoding photosynthetic enzymes such as Rubisco. This is further supported by an analysis of CO 2 response curves, suggesting that Rubisco limitation could be one of the reasons for the SLW-induced reduction in P n (Lin et al 1999b).…”

Section: Discussionmentioning

confidence: 52%

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Silverleaf whitefly stress impairs sugar export from cotton source leaves

Lin

Wolf

Schwartz

et al. 2000

Physiologia Plantarum

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Silverleaf whitefly (SLW), Bemisia argentifolii Bellows and cose and fructose and decreased starch concentrations. Ex-Perring, is one of the most noxious pests of numerous field port rate was determined after 14 CO 2 pulse-labeling both by in situ monitoring of leaf radioactivity and by analyzing the and vegetable crops, causing billions of dollars worth of content and radioactivity of the major carbon metabolites. damage throughout the world. SLW is a phloem feeder Radioactive counting indicated a lower rate of 14 C efflux for whose feeding is likely to interfere with phloem transport. the infested plants. A similar trend was found for the specific The aim of this study was to test the hypothesis that SLW activities of sucrose and the three soluble sugars combined infestation impairs carbohydrate export from source leaves, and consequently increases their carbohydrate content. The (sucrose, glucose and fructose). A single exponential decay youngest fully expanded leaves of cotton (Gossypium hirsu-function with asymptote was fitted to the above efflux curves.All the calculated exponential coefficients demonstrated tum L., cv. Siv'on), grown under SLW-infested and noninfested conditions, were characterized for their diurnal lower export rates after SLW injury. These results indicate changes in carbohydrate content and photoassimilate export. that SLW impairs photoassimilate export, suggesting possible down-regulation of P n due to increased foliar soluble SLW infestation induced a considerable reduction in net sugar contents. photosynthetic rate (P n ), coupled with increased sucrose, glu-

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Section: Photosynthetic Performancesupporting

confidence: 90%

Section: Discussionmentioning

confidence: 52%

Silverleaf whitefly stress impairs sugar export from cotton source leaves

Lin

Wolf

Schwartz

et al. 2000

Physiologia Plantarum

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“…Evaluating B. tabaci effects on photosynthesis can serve as an alternative to indirectly assess damage. Previous studies reported photosynthetic rate reductions caused by B. tabaci infestations in various crops [16,25,26].…”

Section: Discussionmentioning

confidence: 99%

Change in the Physiological Aspects of Soybean Caused by Infestation by Bemisia tabaci MEAM1

Silva,

Almeida,

e Silva

et al. 2024

Agronomy

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Whiteflies cause significant crop losses through direct sap feeding, inducing plant physiological disorders and promoting the growth of sooty mold. Moreover, whiteflies can indirectly harm plants by transmitting plant viruses, particularly begomoviruses and criniviruses, resulting in severe viral disease epidemics. This study aimed to evaluate the physiological characteristics of susceptible and resistant soybean cultivars to B. tabaci. The experiments were conducted in a greenhouse. Eleven soybean cultivars were selected and infested with 100 adults of B. tabaci at the V3 stage. The evaluation of photosynthetic parameters, such as photosynthetic rate, leaf transpiration, stomatal conductance, and internal CO2 concentration, revealed that B. tabaci infestation influenced gas exchange in soybean plants. The photosynthetic rate was higher in cultivars AS3810 and M8349 during the V6 stage. Infestations caused alterations in photosynthetic parameters, suggesting increased energy demand to maintain photosynthetic activity. However, the response to infestation varied among the different cultivars, indicating varying levels of resistance and tolerance to the whitefly’s damage. Furthermore, the infestation had a more notable impact during the vegetative phenological stage. In summary, infestation by B. tabaci has a discernible impact on the physiology of soybean plants, resulting in alterations in gas exchange parameters and water use efficiency. The reaction to infestation exhibited variations among different soybean cultivars, indicating potential differences in resistance to the pest. This study underscores the significance of assessing the physiological consequences of whitefly infestations on soybean crops.

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“…Evaluating the effects of B. tabaci feeding on photosynthesis can serve as an alternative approach to indirectly assess the damage caused by this pest. Previous studies have reported reductions in the photosynthetic rate caused by B. tabaci infestations in various crops [17,[25][26][27].…”

Section: Discussionmentioning

confidence: 99%

Change in the Physiological Aspects of Soybean Caused by Infestation by Bemisia tabaci MEAM1

Silva,

Almeida,

Silva

et al. 2023

Preprint

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The whitefly leads extensive damage to plants through direct feeding, honeydew secretion, plant physiological disorders, and vectoring plant viruses. This study aimed to evaluate the physiological characteristics of susceptible and resistant soybean cultivars to B. tabaci. The experiments were conducted in a greenhouse. Eleven soybean cultivars were selected and infested with 100 adults of B. tabaci at the V3 stage. The evaluation of photosynthetic parameters, such as photosynthetic rate, leaf transpiration, stomatal conductance, and internal CO2 concentration, revealed that B. tabaci infestation influenced gas exchange in soybean plants. The photosynthetic rate was higher in cultivars AS3810 and M8349 during the V6 stage. Infestations led to alterations in photosynthetic parameters, suggesting increased energy demand to maintain photosynthetic activity. However, the response to infestation varied among different cultivars, indicating varying levels of resistance and tolerance to the whitefly's damage. Additionally, the impact of infestation was more significant during the vegetative phenological. In conclusion, B. tabaci infestation affects soybean plants' physiology, leading to changes in gas exchange parameters and water use efficiency. The response to infestation varied among soybean cultivars, suggesting potential differences in resistance to the pest. The study highlights the importance of evaluating the physiological impact of whitefly infestations on soybean.

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Non-stomatal factors limit cotton photosynthesis under silverleaf whitefly stress

Cited by 13 publications

References 0 publications

Silverleaf whitefly stress impairs sugar export from cotton source leaves

Silverleaf whitefly stress impairs sugar export from cotton source leaves

Change in the Physiological Aspects of Soybean Caused by Infestation by Bemisia tabaci MEAM1

Change in the Physiological Aspects of Soybean Caused by Infestation by Bemisia tabaci MEAM1

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