腾讯科技讯 第60届Intel ISEF英特尔国际科学与工程大奖赛将于2009年5月10日到15日在美国内华达州雷诺市举行，以下是来自中国的参赛项目介绍：
华中师范大学第一附属中学 高三年级 孙可 吕思扬 柴皓曦
Discovery of an anti-brown-planthopper (Nilaparvata lugens Stål) rice and its wonderful mechanism for repelling the insects
In 2006-2007 planthopper disaster overspread to a large area of China and drew our much concern and curiosity. Thus, we carried out a series of experiments to try to find out how the insects imperil rice and hopefully to find solution to the problem. Our results are summarized as follows: 1. By making sections and SEM observation of leaves, we found that planthoppers imperil rice mainly by sucking the nutrient from its phloem; 2. Our in vitro experiments confirmed that the insects indeed need sugar as food and can sense where is the sugar in plants; 3. Among 8 selected cultivars, by careful quantitative-controlled insect-intrusion test and statistic analysis, we finally confirmed a hybrid rice,WH66, that has strong ability to repel palnthopper; 4. Both microscopic observation and histochemical investigation revealed that WH66 could soon response to insect attack by producing a large quantity of proteins at sieve-tube cells to block the transduction of nutrient. Thus, prevent plants from deep injury by the insect sucking. After the insects were gone, the protein soon digested and normal function of sieve tube was recovered. Such interesting mechanism of plant response to insect invasion has been never reported yet. Our finding offers a new clue for the production and confirmation of new hybrids of anti-planthopper rice in the future.