Plant Physiol.
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
QUICK SEARCH:   [advanced]


     

Plant Physiology Preview
Published on February 1, 2008; 10.1104/pp.107.111484

OPEN ACCESS ARTICLE
This Article
Free via Open Access: OA
Right arrow Full Text (Plant Physiology Preview (PDF))
Right arrow Supplemental Data
Right arrowOA All Versions of this Article:
146/4/1810    most recent
pp.107.111484v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Web of Science (4)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Hao, P.
Right arrow Articles by He, G.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Hao, P.
Right arrow Articles by He, G.
Agricola
Right arrow Articles by Hao, P.
Right arrow Articles by He, G.

Received October 24, 2007
Accepted January 28, 2008

Herbivore-induced callose deposition on the sieve plates of rice: an important mechanism for host resistance

Peiying Hao , Caixiang Liu , Yuanyuan Wang , Rongzhi Chen , Ming Tang , Bo Du , Lili Zhu , and Guangcun He *

Key Laboratory of Ministry of Education for Plant Development Biology, College of Life Sciences, Wuhan University, Wuhan 430072, People's Republic of China

* Corresponding author; email: gche{at}whu.edu.cn.

The brown planthopper (Nilaparvata lugens Stal, BPH) is a specialist herbivore on rice (Oryza sativa L.) that ingests phloem sap from the plant through its stylet mouthparts. Electronic Penetration Graphs (EPGs) revealed that BPH insects spent more time wandering over plants carrying the resistance genes Bph14 and Bph15, but less time ingesting phloem than they did on susceptible plants. They also showed that their feeding was frequently interrupted. Tests with [14C]sucrose showed that insects ingested much less phloem sap from the resistant than the susceptible plants. BPH feeding up-regulated callose synthase genes and induced callose deposition in the sieve tubes at the point where the stylet was inserted. The compact callose remained intact in the resistant plants, but genes encoding {beta}-1,3-glucanases were activated, causing unplugging of the sieve tube occlusions, in susceptible plants. Continuing ingestion led to a remarkable reduction in the susceptible plants' sucrose contents and activation of the Ramy3D gene, leading to starch hydrolysis and ultimately carbohydrate deprivation in the plants. Our results demonstrate that BPH feeding induces the deposition of callose on sieve plates in rice, and that this is an important defense mechanism that prevents the insects ingesting phloem sap. In response, however, the BPH can unplug sieve tube occlusions by activating {beta}-1, 3-glucanase genes in rice plants.




This article has been cited by other articles:


Home page
 ANN BOT (LOND)Home page
B. W. Porter, Y. J. Zhu, D. T. Webb, and D. A. Christopher
Novel thigmomorphogenetic responses in Carica papaya: touch decreases anthocyanin levels and stimulates petiole cork outgrowths
Ann. Bot., April 1, 2009; 103(6): 847 - 858.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
ASPB Publications PLANT PHYSIOLOGY® THE PLANT CELL
Copyright © 2008 by the American Society of Plant Biologists