tailieunhanh - báo cáo khoa học: "Fusarium graminearum forms mycotoxin producing infection structures on wheat"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Fusarium graminearum forms mycotoxin producing infection structures on wheat | Fusarium graminearum forms mycotoxin producing infection structures on wheat Boenisch and Schafer Boenisch and Schafer BMC Plant Biology 2011 11 110 http 1471-2229 11 110 28 July 2011 BioMed Central Boenisch and Schafer BMC Plant Biology 2011 11 110 http 1471-2229 11 110 BMC Plant Biology RESEARCH ARTICLE Open Access Fusarium graminearum forms mycotoxin producing infection structures on wheat Marike J Boenisch and Wilhelm Schafer Abstract Background The mycotoxin producing fungal pathogen Fusarium graminearum is the causal agent of Fusarium head blight FHB of small grain cereals in fields worldwide. Although F. graminearum is highly investigated by means of molecular genetics detailed studies about hyphal development during initial infection stages are rare. In addition the role of mycotoxins during initial infection stages of FHB is still unknown. Therefore we investigated the infection strategy of the fungus on different floral organs of wheat Triticum aestivum L. under real time conditions by constitutive expression of the dsRed reporter gene in a TRI5prom GFP mutant. Additionally trichothecene induction during infection was visualised with a green fluorescent protein GFP coupled TRI5 promoter. A tissue specific infection pattern and TRI5 induction were tested by using different floral organs of wheat. Through combination of bioimaging and electron microscopy infection structures were identified and characterised. In addition the role of trichothecene production for initial infection was elucidated by a TRI5-GFP reporter strain. Results The present investigation demonstrates the formation of foot structures and compound appressoria by F. graminearum. All infection structures developed from epiphytic runner hyphae. Compound appressoria including lobate appressoria and infection cushions were observed on inoculated caryopses paleas lemmas and glumes of susceptible and resistant wheat cultivars. A specific trichothecene .

TÀI LIỆU LIÊN QUAN
crossorigin="anonymous">
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.