메뉴 건너뛰기
소속 기관 / 학교 인증
인증하면 논문, 학술자료 등을  무료로 열람할 수 있어요.
한국대학교, 누리자동차, 시립도서관 등 나의 기관을 확인해보세요
(국내 대학 90% 이상 구독 중)
고객센터 ENG
주제분류

논문 기본 정보

저자정보
출처
Elsevier BV iScience 26(5)
오류 신고하기
표지

검색

    초록·키워드

    In insects, specialized feeding on the phloem sap (containing mainly the sugar sucrose) has evolved only in some hemipteran lineages. This feeding behavior requires an ability to locate feeding sites buried deeply within the plant tissue. To determine the molecular mechanism involved, we hypothesized that the phloem-feeding whitefly <i>Bemisia tabaci</i> relies on gustatory receptor (GR)-mediated sugar sensing. We first conducted choice assays, which indicated that <i>B. tabaci</i> adults consistently choose diets containing higher sucrose concentrations. Next, we identified four <i>GR</i> genes in the <i>B. tabaci</i> genome. One of them, <i>BtabGR1</i>, displayed significant sucrose specificity when expressed in <i>Xenopus</i> oocytes. Silencing of <i>BtabGR1</i> significantly interfered with the ability of <i>B. tabaci</i> adults to discriminate between non-phloem and phloem concentrations of sucrose. These findings suggest that in phloem feeders, sugar sensing by sugar receptors might allow tracking an increasing gradient of sucrose concentrations in the leaf, leading eventually to the location of the feeding site.

    본문·목차

    최근 본 자료 전체보기