Environmental Conditions and Grazing Exerted Effects on Arbuscular Mycorrhizal in Plants at Southern Patagonia Rangelands

2022 ◽  
Vol 81 ◽  
pp. 44-54
Author(s):  
Santiago Toledo ◽  
Pablo L. Peri ◽  
Sonia B. Fontenla
ISRN Ecology ◽  
2012 ◽  
Vol 2012 ◽  
pp. 1-13 ◽  
Author(s):  
Fatou Ndoye ◽  
Aboubacry Kane ◽  
Eddy Léonard Ngonkeu Mangaptché ◽  
Niokhor Bakhoum ◽  
Arsène Sanon ◽  
...  

The responses of the soil microbial community features associated to the legume tree Acacia senegal (L.) Willd. including both arbuscular mycorrhizal fungal (AMF) diversity and soil bacterial functions, were investigated under contrasting environmental conditions. Soil samples were collected during dry and rainy seasons in two contrasting rainfall sites of Senegal (Dahra and Goudiry, in arid and semiarid zone, resp.). Soils were taken from the rhizosphere of A. senegal both in plantation and natural stands in comparison to bulk soil. A multiple analysis revealed positive correlations between soil physicochemical properties, mycorrhizal potential and enzyme activities variables. The positive effects of A. senegal trees on soil mycorrhizal potential and enzyme activities indicates that in sahelian regions, AMF spore density and diversity as well as soil microbial functions can be influenced by land-use systems (plantation versus natural population of A. senegal) and environmental conditions such as moisture and soil nutrient contents. Our study underlines the importance of prior natural AMF screening for better combinations of A. senegal seedlings with AMF species to achieve optimum plant growth improvement, and for restoration and reforestation of degraded lands.


2017 ◽  
Vol 48 (1) ◽  
pp. 87-94 ◽  
Author(s):  
Yamir Torres-Arias ◽  
Rosalba Ortega Fors ◽  
Camila Nobre ◽  
Eduardo Furrazola Gómez ◽  
Ricardo Luis Louro Berbara

2021 ◽  
Vol 63 (9) ◽  
pp. 44-47
Author(s):  
Vu Phong Nguyen ◽  
◽  
Trung Nguyen Vu ◽  
Kien Tran ◽  
Thi Truc Mai Ha ◽  
...  

Mycorrhiza was considered to enhance plant growth, especially in unfavourable environmental conditions. From 60 samples of rhizospheric soils and roots of black pepper (Piper nigrum) grown in Ba Ria - Vung Tau, Dong Nai, and Gia Lai provinces, the presence of Acaulospora, Gigaspora, Glomite, Glomus,and Scutellospora genera were detected, of which Glomus and Acaulospora were dominants. After 40 days of inoculation, mycorrhiza multiplied 8.5 fold on corn (Zea mays) and 6.5 fold on sorghum (Sorghum bicolor) or goosegrass (Eleusine indica). Black-pepper cuttings on substrate supplemented mycorrhiza showed better growth than the non-inoculated cuttings. Results suggest the potential of applying mycorrhizal fungi as biological agents in sustainable black pepper cultivation, adapting to climate change


Author(s):  
K. Ohi ◽  
M. Mizuno ◽  
T. Kasai ◽  
Y. Ohkura ◽  
K. Mizuno ◽  
...  

In recent years, with electron microscopes coming into wider use, their installation environments do not necessarily give their performance full play. Their environmental conditions include air-conditioners, magnetic fields, and vibrations. We report a jointly developed entirely new vibration isolator which is effective against the vibrations transmitted from the floor.Conventionally, large-sized vibration isolators which need the digging of a pit have been used. These vibration isolators, however, are large present problems of installation and maintenance because of their large-size.Thus, we intended to make a vibration isolator which1) eliminates the need for changing the installation room2) eliminates the need of maintenance and3) are compact in size and easily installable.


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