Metabolic variations in different citrus rootstock cultivars associated with different responses to Huanglongbing

Albrecht, Ute; Fiehn, Oliver; Bowman, Kim D.

doi:10.1016/j.plaphy.2016.05.030

Cited by 73 publications

(79 citation statements)

References 51 publications

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“…The increase in these metabolites could result from the increase in respiration rate, which can be increased to provide more energy during plant responses to stresses (Adi et al., ). Citric acid and fumaric acid also increased in C Las‐infected citrus plants (Albrecht, Fiehn, & Bowman, ). The accumulation of citric acid and fumaric acid was explained as an attempt to enhance nutrient uptake in response C Las‐infection (Albrecht et al., ).…”

Section: Discussionmentioning

confidence: 99%

Effects of δ‐aminolevulinic acid dehydratase silencing on the primary and secondary metabolisms of citrus

et al. 2018

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δ‐aminolevulinic acid dehydratase (ALAD) is an important enzyme in tetrapyrrole synthesis. ALAD combines two δ‐aminolevulinic acid (δ‐ALA) molecules to form the pyrrole molecule, porphobilinogen, an important precursor for plant pigments involved in photosynthesis, respiration, and nutrient uptake. In this study, we investigated the effects of silencing of ALAD gene on citrus leaf pigments and metabolites. The ALAD enzyme was inhibited using virus‐induced gene silencing (VIGS) technology using citrus tristeza virus (CTV). δ‐ALA accumulated in citrus plants inoculated with the recombinant virus (CTV‐tALAD) to silence ALAD and resulted in discrete yellow spots (yellow islands) and necrosis in leaves and stems. The levels of chlorophylls, starch, sucrose, trans‐ and cis‐violaxanthin, and α‐ and β‐cryptoxanthin were reduced in CTV‐tALAD plants, whereas zeaxanthin was increased. The increase in zeaxanthin and the decrease in its precursors indicated that the reduction in chlorophylls resulted in light damage. Salicylic acid and jasmonic acid levels, as well as emission of (E)‐α‐bergamotene and (E)‐β‐farnesene, increased in CTV‐tALAD plants indicating these plants were under stress. Our results showed that silencing of ALAD induces stress in plants and that VIGS using mild CTV strains is a promising technique to study biological function of citrus genes.

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Section: Discussionmentioning

confidence: 99%

Effects of δ‐aminolevulinic acid dehydratase silencing on the primary and secondary metabolisms of citrus

et al. 2018

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“…Scion/rootstock combination showed the differences on tolerance to HLB. Albrecht et al (2016) studied that many metabolites in the tolerant cultivars were expressed in higher concentrations and lower availability of specific sugars which was necessary for pathogen survival. It might had an important role in the decreased disease severity.…”

Section: Introductionmentioning

confidence: 99%

Development of Disease and Growth on Six Scion/Rootstock Combinations of Citrus Seedlings under Huanglongbing Pressure

Widyaningsih¹,

Utami²,

Joko³

et al. 2017

JAS

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Huanglongbing (HLB) disease is the most serious threat to citrus production in Indonesia. Commonly, the planted rootstocks/scion varieties expressed severely damaged to HLB. This research aimed to study effects of six citrus rootstock/scion combination of varieties on intensity of HLB disease, presence of Candidatus Liberibacter asiaticus (CLas), and growth of the seedlings. The grafting combination of three rootstock varieties: Japansche citroen (Citrus limonia Osbeck), Volkamer lemon (C. volkameriana V. Ten & Pasq), 'Salam' (local name), and two scions varieties: 'Siem Pontianak' (C. nobilis Lour) and 'Keprok Tejakula'. 'Keprok Tejakula' (C. reticulata Blanco) were used for examination the effect rootstock/scion combination to HLB. Based on symptoms, the onset of disease intensity was observed in eight months after CLas inoculation, except on 'Salam' rootstock. The status of CLas inoculation, rootstock/scions varieties and the duration of plant infection influenced to CLas titers. There were inconsistency between HLB symptoms and CLas titers. According to measurement of plant height, and diameter of rootstocks and scion stem, the plant growth of Volkamer lemon rootstock grafted with 'Siam Purworejo' scion or 'Keprok Tejakula' scion was better than grafted with Japansche citroen and 'Salam' rootstocks. Japansche citroen rootstock was more susceptible to HLB than Volkamer lemon and 'Salam' rootstocks. Combination of rootstock/scion varieties affected plant tolerance against HLB.

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“…Metabolomic studies conducted on phloem sap showed that the concentration of mono- and disaccharides, sugar alcohols, and sugars in the phloem affects Ca.L. growth in phloem (Slisz et al, 2012; Albrecht et al, 2016; Killiny, 2016). …”

Section: Metabolic Disorder Of Carbohydrate Metabolismmentioning

confidence: 99%

Genetic Mechanisms of the Devious Intruder Candidatus Liberibacter in Citrus

Martinelli

Dandekar

2017

Front. Plant Sci.

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Metabolic variations in different citrus rootstock cultivars associated with different responses to Huanglongbing

Cited by 73 publications

References 51 publications

Effects of δ‐aminolevulinic acid dehydratase silencing on the primary and secondary metabolisms of citrus

Effects of δ‐aminolevulinic acid dehydratase silencing on the primary and secondary metabolisms of citrus

Development of Disease and Growth on Six Scion/Rootstock Combinations of Citrus Seedlings under Huanglongbing Pressure

Genetic Mechanisms of the Devious Intruder Candidatus Liberibacter in Citrus

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