کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4506989 | 1624357 | 2008 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Rice blast disease and susceptibility to pests in a silicon uptake-deficient mutant lsi1 of rice Rice blast disease and susceptibility to pests in a silicon uptake-deficient mutant lsi1 of rice](/preview/png/4506989.png)
To elucidate the role of silicon more clearly in biotic stress such as pests and diseases, a silicon uptake-deficient mutant lsi1 originating from wild-type rice (cv. Oochikara) was used. When the mutant was grown in a seedling case, silicon did not accumulate in leaves (about 50–80 mg g−1 dry weight), regardless of the silicon amendment. In the paddy field, however, silicon increased three-fold (373 mg g−1 dry weight) in leaves with silicon amendment, compared with those (117 mg g−1 dry weight) with no silicon amendment. Lesion formation by Magnaporthe grisea was significantly suppressed in the leaves of the wild-type plant that had a high accumulation of silicon, but not in the leaves of the mutant that had a low silicon accumulation. Pest resistance was also observed in the leaves of the wild-type plant, but not in the mutant. These results demonstrated that silicon can protect rice plants from damage caused by biotic stresses.
Journal: Crop Protection - Volume 27, Issues 3–5, March–May 2008, Pages 865–868