Physiological characteristics of citrus plants infested with citrus blackfly

Gomes, Alirya Magda Santos do Vale; Reis, Fabrício de Oliveira; Lemos, Raimunda Nonata Santos de; Mondego, Janaina Marques; Braun, Heder; Araújo, José Ribamar Gusmão

doi:10.1016/j.rbe.2019.02.002

Cited by 6 publications

(4 citation statements)

References 24 publications

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“…The reduction in T p by HLB and increasing Cu rate is expected considering that these treatments produced smaller canopy areas. Our findings are consistent with those of other authors [47,56].…”

Section: Resultssupporting

confidence: 94%

Interaction of Huanglongbing and Foliar Applications of Copper on Water Relations of Citrus sinensis cv. Valencia

Hamido

Ebel

Morgan

2019

Plants

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The following study was conducted to determine the impact of frequent foliar Cu applications on water relations of Huanglongbing (HLB)-affected Citrus sinensis cv. ‘Valencia’. HLB in Florida is putatively caused by Candidatus Liberibacter asiaticus that is vectored by the Asian citrus psyllid. The experiment was conducted in a psyllid-free greenhouse with trees grown in Immokalee fine sand soil with the trees well-maintained to promote health. Cu was applied to the foliage at 0×, 0.5×, 1×, and 2× the commercially recommended rates, which were 0, 46, 92, and 184 mM, respectively, with applications made 3× in both 2016 and 2017. Previous studies indicate that HLB causes roots to decline before the canopy develops symptoms, which increases the ratio between the evaporative surface area of the canopy to the uptake surface area of roots and increases the hydraulic strain within the tree. In the current study, overall growth was suppressed substantially by HLB and Cu treatments but the ratio between evaporative surface area (leaf surface area) and the uptake surface area of roots (feeder root surface area) was not affected by either treatment. Stem water potential (Ψxylem), which was used as a measure of plant water deficits and the hydraulic strain within the tree, was significantly 13% lower for HLB-affected trees than the non-HLB controls but were not affected by Cu treatments. All Ψxylem measurements were in a range typical of well-watered trees conditions. Stomatal conductance (ks) and root and soil resistances (Rr+s) were not affected by HLB and Cu. The results of this experiment suggest that tree leaf area and feeder roots are reduced when the trees are affected by HLB or are treated with foliar Cu applications such that plant water deficits are not significantly different over that of the controls.

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Section: Resultssupporting

confidence: 94%

Interaction of Huanglongbing and Foliar Applications of Copper on Water Relations of Citrus sinensis cv. Valencia

Hamido

Ebel

Morgan

2019

Plants

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“…Direct damage by A . woglumi is caused by continuous sucking of leaf sap [ 27 ], whereas indirect damage is associated with the development of a sooty mold ( Capnodium sp.) causing negative physiological changes to plants [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

“…causing negative physiological changes to plants [ 28 ]. Physiological changes caused by these direct and indirect effects decelerate plant growth and reduce the quality, size and number of fruits [ 27 ]. In Mexico and Florida, short-term (< 1 year) infestations were found to reduce fruit production by up to 50%, and longer-term infestations frequently resulted in almost complete loss of production.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Potential global distribution of Aleurocanthus woglumi considering climate change and irrigation

et al. 2021

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Citrus blackfly, Aleurocanthus woglumi Ashby (Hemiptera: Aleyrodidae), is an important agricultural quarantine pest, causing substantial economic losses to citrus and many other cultivated crops. Aleurocanthus woglumi is found in tropical and subtropical regions but is presently unknown in Europe and the Mediterranean Basin. We used CLIMEX to model the potential distribution of A. woglumi under an historical climate scenario (centred on 1995), including a spatially explicit irrigation scenario. We found that A. woglumi could potentially invade the Mediterranean Basin, and south-east Asia, including Australia. There is potential for it to invade most of sub-Saharan Africa. Irrigation is revealed as an important habitat factor affecting the potential distribution of A. woglumi, increasing its potential range by 53% in Asia. Under a future climate scenario for 2050, its potential distribution increased across all continents except Africa, where potential range expansion due to relaxation of cold stresses was limited, and was offset by range decrease due to lethal heat or dry stress. As global climates warm, Europe is likely to face a substantial increase in the area at risk of establishment by A. woglumi (almost doubling under the 2050 irrigation scenario). The biosecurity threat from A. woglumi is significant in current citrus production areas and poses a challenge to biosecurity managers and risk analysts.

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Does the physiological trade-off between reproduction and defense affect the physiological and biochemical parameters of tomato plants infested with Bemisia tabaci MED and MEAM1?

Toledo

Oliveira

Ponce

et al. 2022

Arthropod-Plant Interactions

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Physiological characteristics of citrus plants infested with citrus blackfly

Cited by 6 publications

References 24 publications

Interaction of Huanglongbing and Foliar Applications of Copper on Water Relations of Citrus sinensis cv. Valencia

Interaction of Huanglongbing and Foliar Applications of Copper on Water Relations of Citrus sinensis cv. Valencia

Potential global distribution of Aleurocanthus woglumi considering climate change and irrigation

Does the physiological trade-off between reproduction and defense affect the physiological and biochemical parameters of tomato plants infested with Bemisia tabaci MED and MEAM1?

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