%0 Journal Article
%T REGULATION OF P STATUS IN HOST PLANT ON ALKALINE PHOSPHATASE (ALP) ACTIVITY IN INTRARADICAL HYPHAE AND DEVELOPMENT OF EXTRARADICAL HYPHAE OF AM FUNGI<br>植物磷营养状况对丛枝菌根真菌生长及代谢活性的调控*
%A FENG Hai-Yan
%A FENG Gu
%A WANG Jing-Guo
%A LI Xiao-Lin
%A <br>冯海艳
%A 冯固
%A 王敬国
%A 李晓林
%J 菌物学报
%D 2003
%I 
%X In order to investigate the influence of phosphorus (P) status of host plant on development and metabolic activity of AM fungi, a four-compartment cultivation system was used. Maize was grown in soil supplied with different P fertilizer levels, in association with the arbuscular mycorrhizal (AM) fungi Glomus sinuosum, Glomus intraradices or left un-inoculated. The result showed that P uptake and plant dry matter were enhanced by inoculation with Glomus intraradices when no P (P0) was supplied into soil. There was significantly increase of P uptake by mycorrhizal maize plant, but no significant influence on plant dry matter under 50 mgkg-1 P level. Under 250 or 500 mgkg-1 P level, there is no increase of plant dry matter and P uptake by mycorrhizal maize plant. ALP activity in intraradical hyphae decreased significantly with the increasing of supplied P level. In compared with non-P supplying treatment, extraradical hyphal density in soil was increased at 50 mgkg-1 P level and decreased at 250 and 500 mgkg-1 P levels. It is concluded that ALP activity in intraradical hyphae and development of extraradical hyphae of AM fungi can be regulated by P status of host plant by appending P into soil. There were no significant differences of ALP activity and development of AM fungi responded to P supplied levels between Glomus sinuosum and Glomus intraradices. Due to the development and metabolic activity of AM fungi inhibited by higher P level, P uptake by AM fungi was decreased. It may be one of the reasons resulting in the decrease of mycorrhizal efficiency.
%K Supplied P level
%K Glomus sinuosum
%K Glomus intraradices
%K Zea mays<br>施磷水平
%K 弯丝球囊霉
%K 根内球囊霉
%K 玉米
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=CA9F815FCB0F62294C4266BB6F902ACB&aid=E3D44E2412A1A676&yid=D43C4A19B2EE3C0A&vid=BC12EA701C895178&iid=E158A972A605785F&sid=4081E94A71AB3C30&eid=4720E9D07E8A2290&journal_id=1672-6472&journal_name=菌物学报&referenced_num=2&reference_num=18