Acylsugars of the wild tomato Lycopersicon pennellii in relation to geographic distribution of the species

Shapiro, Joseph A.; Steffens, John C.; Mutschler, Martha A.

doi:10.1016/0305-1978(94)90067-1

Cited by 60 publications

(79 citation statements)

References 31 publications

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“…Taken together, these results support the hypothesis that this locus plays a major role in determining the types of acylsugars found in S. pennellii. Our phenotypic results show good agreement with the work of Shapiro et al (1994), who reported that the high iC4 phenotype was found for more southerly accessions, including LA0716, LA1674, LA1946, and LA1941. They also found high iC5 acylsugars for the LA1376, LA2560, and LA1809, which we identified as having iC5-dominant acylsugar acyl chains associated with the presence of at least one SlIPMS3-like long-form allele in the genome.…”

Section: The Influence Of Ipms On Acyl Chain Composition In Cultivatesupporting

confidence: 92%

A feedback insensitive isopropylmalate synthase affects acylsugar composition in cultivated and wild tomato

Ning

Moghe²,

Leong³

et al. 2015

Plant Physiol.

177

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Acylsugars are insecticidal specialized metabolites produced in the glandular trichomes of plants in the Solanaceae family. In the tomato clade of the Solanum genus, acylsugars consist of aliphatic acids of different chain lengths esterified to sucrose, or less frequently to glucose. Through liquid chromatography-mass spectrometry screening of introgression lines, we previously identified a region of chromosome 8 in the Solanum pennellii LA0716 genome (IL8-1/8-1-1) that causes the cultivated tomato Solanum lycopersicum to shift from producing acylsucroses with abundant 3-methylbutanoic acid acyl chains derived from leucine metabolism to 2-methylpropanoic acid acyl chains derived from valine metabolism. We describe multiple lines of evidence implicating a trichome-expressed gene from this region as playing a role in this shift. S. lycopersicum M82 SlIPMS3 (Solyc08g014230) encodes a functional end product inhibition-insensitive version of the committing enzyme of leucine biosynthesis, isopropylmalate synthase, missing the carboxyl-terminal 160 amino acids. In contrast, the S. pennellii LA0716 IPMS3 allele found in IL8-1/8-1-1 encodes a nonfunctional truncated IPMS protein. M82 transformed with an SlIPMS3 RNA interference construct exhibited an acylsugar profile similar to that of IL8-1-1, whereas the expression of SlIPMS3 in IL8-1-1 partially restored the M82 acylsugar phenotype. These IPMS3 alleles are polymorphic in 14 S. pennellii accessions spread throughout the geographical range of occurrence for this species and are associated with acylsugars containing varying amounts of 2-methylpropanoic acid and 3-methylbutanoic acid acyl chains.

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Section: The Influence Of Ipms On Acyl Chain Composition In Cultivatesupporting

confidence: 92%

A feedback insensitive isopropylmalate synthase affects acylsugar composition in cultivated and wild tomato

Ning

Moghe²,

Leong³

et al. 2015

Plant Physiol.

177

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“…Acylsugar composition varies among different Solanum wild tomato species as well as within different accessions of a particular species (Shapiro et al, 1994;McDowell et al, 2011;Kim et al, 2012). To survey the diversity in furanose ring acylation, we chose seven different wild tomato species for which seed was available from the TGRC (Tomato Genetics Resource Center, UC Davis).…”

Section: Diversity In Solanum Acylsucrose Furanose Ring Acylationmentioning

confidence: 99%

Functionally Divergent Alleles and Duplicated Loci Encoding an Acyltransferase Contribute to Acylsugar Metabolite Diversity in Solanum Trichomes

et al. 2015

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“…The resistance of L. pennellii 'LA-716' has been associated with the presence of acylsugars, which are viscous allelochemicals, composed mainly of 2,3,4-tri-O-acylated glucose esters having fatty acids with four to twelve carbon atoms (Burke et al, 1987). This phytochemical can prevent oviposition, feeding, or acting deleterious effect on the development of certain phases of arthropod pests (Goffreda et al, 1989;Shapiro et al, 1994;Resende et al, 2002;Resende et al, 2006;Goncalves et al, 2006;Resende et al, 2008). Liedl et al (1995) have reported a decrease in the adult insect population of B. Argentifolii (= B. tabaci biotype B) with the use of pulverizations on the plants prepared with purified acylsugars extracted from L. pennellii.…”

Section: Palavrasmentioning

confidence: 99%

Resistance of tomato genotypes to the silverleaf whitefly mediated by acylsugars

Resende

Maluf²,

Cardoso³

et al. 2009

Hortic. Bras.

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Acylsugars in the leaflets of the wild accession LA-716 (Lycopersicon pennellii) gives resistance to Bemisia spp., which causes expressive losses to the tomato crop. The goal of this work was to evaluate the resistance to the silverleaf whitefly (Bemisia tabaci biotype B) of previously selected genotypes, based on the level of acylsugars in the leaflets. F 2 BC 1 plants {F 2 [Lycopersicon esculentum TOM 584 x (L. esculentum TOM 584 x L. pennellii LA-716)]} were selected for extreme contents of acylsugars: BPX-370B pl#30-275, BPX-370B pl#79-278, BPX-370B pl#30-380, BPX-370B pl#25-271 (high contents), BPX-370B pl#30-02, BPX-370B pl#30-142 (low contents). These genotypes, along with the parents TOM 584 and LA-716, were submitted to a silverleaf whitefly infestation. Oviposition and nymph development were evaluated. The oviposition on the genotypes BPX-370B pl#30-275 and BPX-370B pl#30-380 was significantly lower to that which occurred on the genotype TOM 584 and in the other genotypes of the F 2 RC 1 generation. The four genotypes selected for high acylsugar contents presented the lowest number of nymphs, except to LA-716. Although the number of eggs in the BPX-370B pl#25-271 and BPX-370B pl#79-278 genotypes (high contents) was elevated, the number of nymphs was reduced, similarly to the other high-acylsugar genotypes, probably due to antibioses effect. Keywords:Bemisia tabaci biotype B, Lycopersicon esculentum, Lycopersicon pennellii, alelochemicals, plant breeding, host plant resistance. RESUMO Resistência de genótipos de tomateiro a Bemisia tabaci biótipo B, mediada por acilaçúcaresAcilaçúcares presentes nos folíolos do acesso selvagem 'LA-716' (Lycopersicon pennellii) conferem resistência a moscas-brancas (Bemisia spp.), causadoras de danos expressivos à cultura do tomate. O objetivo do trabalho foi avaliar a resistência de genótipos de tomateiro à mosca-branca Bemisia tabaci biótipo B, com base nos teores de acilaçúcares nos folíolos. Foram selecionadas plantaspennellii 'LA-716')]} para teores extremos de acilaçúcares: BPX-370B pl#30-275, BPX-370B pl#79-278, BPX-370B pl#30-380, BPX-370B pl#25-271 (altos teores), BPX-370B pl#30-02, BPX-370B pl#30-142 (baixos teores). Esses genótipos, juntamente com os parentais TOM 584 e LA-716, foram submetidos à infestação da mosca-branca. Avaliaram-se a oviposição e o desenvolvimento de ninfas. A oviposição nos genótipos BPX-370B pl#30-275 e BPX-370B pl#30-380 foi significativamente inferior à ocorrida em 'TOM-584' e nos demais genótipos da população F 2 RC 1 . Os quatro genótipos selecionados para alto teor de acilaçúcares apresentaram número de ninfas significativamente inferior aos demais, exceto ao acesso LA-716. Embora o número de ovos nos genótipos BPX-370B pl#25-271 e BPX-370B pl#79-278 (alto teor de acilaçúcares) tenha sido elevado, o número de ninfas foi reduzido, indicando que, mesmo havendo a oviposição sobre os folíolos, provavelmente os acilaçúcares exerceram efeito adverso ao desenvolvimento do inseto. Palavras-chave:

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Acylsugars of the wild tomato Lycopersicon pennellii in relation to geographic distribution of the species

Cited by 60 publications

References 31 publications

A feedback insensitive isopropylmalate synthase affects acylsugar composition in cultivated and wild tomato

A feedback insensitive isopropylmalate synthase affects acylsugar composition in cultivated and wild tomato

Functionally Divergent Alleles and Duplicated Loci Encoding an Acyltransferase Contribute to Acylsugar Metabolite Diversity in Solanum Trichomes

Resistance of tomato genotypes to the silverleaf whitefly mediated by acylsugars

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