Glucose and Glucose Esters in the Larval Secretion of Chrysomela Lapponica; Selectivity of the Glucoside Import System from Host Plant Leaves

A new cucurbitane glucoside, 23-O-β-D-glucopyranosyl-7-hydroxy-3-O-malonylcucurbita-5,24-dien-19-al, named momordicine V, has been isolated from Momordica charantia leaves, along with the previously reported compounds, momordicines I, II, IV and 3-O-malonylmomordicineI. The structure of the new compound was established on the basis of spectralanalysis, as well as by its conversion to momordicine II by alkaline catalyzed hydrolysis. Momordicine V deterred significantly the oviposition by L. trifolii on host plant leaves treated at 26.16 μg/cm2 leaf surface

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Whitefly Network Analysis Reveals Gene Modules Involved in Host Plant Selection, Development and Evolution

Frontiers in Physiology ◽

10.3389/fphys.2021.656649 ◽

2021 ◽

Vol 12 ◽

Author(s):

Jiahui Tian ◽

Haixia Zhan ◽

Youssef Dewer ◽

Biyun Zhang ◽

Cheng Qu ◽

...

Keyword(s):

Network Analysis ◽

Host Plant ◽

Plant Viruses ◽

Host Plant Selection ◽

Plant Leaves ◽

Plant Selection ◽

Plant Recognition ◽

Wide Range ◽

Gene Modules ◽

Development And Evolution

Whiteflies are Hemipterans that typically feed on the undersides of plant leaves. They cause severe damage by direct feeding as well as transmitting plant viruses to a wide range of plants. However, it remains largely unknown which genes play a key role in development and host selection. In this study, weighted gene co-expression network analysis was applied to construct gene co-expression networks in whitefly. Nineteen gene co-expression modules were detected from 15560 expressed genes of whitefly. Combined with the transcriptome data of salivary glands and midgut, we identified three gene co-expression modules related to host plant selection. These three modules contain genes related to host-plant recognition, such as detoxification genes, chemosensory genes and some salivary gland-associated genes. Results of Gene Ontology and Kyoto Encyclopedia of Genes and Genomes analyses elucidated the following pathways involved in these modules: lysosome, metabolic and detoxification pathways. The modules related to the development contain two co-expression modules; moreover, the genes were annotated to the development of chitin-based cuticle. This analysis provides a basis for future functional analysis of genes involved in host-plant recognition.

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List of plants with galls induced by insects from the UNILAVRAS/Boqueirão Biological Reserve, Ingaí, state of Minas Gerais, Brazil

Check List ◽

10.15560/8.3.426 ◽

2012 ◽

Vol 8 (3) ◽

pp. 426 ◽

Cited By ~ 17

Author(s):

Kira Malves ◽

Fernando Antônio Frieiro-Costa

Keyword(s):

Host Plant ◽

Host Species ◽

Riparian Forest ◽

Minas Gerais ◽

Plant Leaves ◽

Plant Organs ◽

Biological Reserve

Tumors caused on vegetal tissues, named galls or cecidiens, may occur due to the action of several organisms such as bacteria, viruses, nematodes, fungi and insects. The main inductors are insects and this is a highly complex kind of herbivory. Most of the insects that induce the formation of galls are specific to their host plant, i.e., they do it only in a species or in a closed relation of a group of host species. From August 2007 to July 2009 a survey on galls was carried out in the UNILAVRAS/Boqueirão Biological Reserve, located in the municipality of Ingaí/MG, in the environments Cerrado, rocky field and riparian forest. Fifth-seven galls morphotypes were registered in plant organs, distributed on 18 families. The vegetal families that presented the highest amount of galls were Myrtaceae, Asteraceae e Melastomataceae. Galls were observed on the following parts of the plant: leaves, stem, fruit and petiole and the leaves represented the most attacked organ by cecidogens.

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