Seasonality of vesicular-arbuscular mycorrhizae in sedges in a semi-arid tropical grassland

Influence of edapho-climatic factors on the sporulation and colonization of arbuscular mycorrhizal fungi in two Amazonian native fruit species

“…The positive correlation between the precipitation and AMF variables in the present study were opposite to the previous finding that mycorrhizal variables and rainfall had a negative correlation (Muthukumar and Udaiyan, 2002), but consisted with other studies (Braunberger et al, 1994;Lingfei et al, 2005). Soil moisture has been reported to be positively correlated with AMF colonization (He et al, 2002;Bohrer et al, 2004;Lingfei et al, 2005, Oliveira andOliveira, 2005), which might be a strong argument supporting the present results, as precipitation is an important element of soil moisture.…”

“…The influence of climatic variables on AMF colonization and spore numbers here registered corroborated several investigations (Saito and Kato, 1994;Udaiyan et al, 1996;Muthukumar and Udaiyan, 2002;Staddon et al, 2003;Lingfei et al, 2005) that also found the influence of climatic factors on AMF formation and development in natural ecosystems. The positive correlation between the precipitation and AMF variables in the present study were opposite to the previous finding that mycorrhizal variables and rainfall had a negative correlation (Muthukumar and Udaiyan, 2002), but consisted with other studies (Braunberger et al, 1994;Lingfei et al, 2005).…”

“…The distribution and function of AMF in natural ecosystems are still poorly understood. However, information on their prevalence and importance in natural ecosystems is limited and often contradictory (Muthukumar and Udaiyan, 2002). The development and seasonal fluctuations in AMF has been studied in several plant species or communities (Merryweather and Fitter, 1998;He et al, 2002;Muthukumar and Udaiyan, 2002;Morammad et al, 2003), although most of these studies have failed to find consistent seasonal patterns of AMF development.…”

“…The development and seasonal fluctuations in AMF has been studied in several plant species or communities (Merryweather and Fitter, 1998;He et al, 2002;Muthukumar and Udaiyan, 2002;Morammad et al, 2003), although most of these studies have failed to find consistent seasonal patterns of AMF development. The patterns and timing of AMF development may depend on the edaphic conditions (He et al, 2002;Morammad et al, 2003) or climatic conditions (Saito and Kato, 1994;Carvalho et al, 2001;Muthukumar and Udaiyan, 2002). A few studies have been conducted on the influence of Amazonian edaphic and climatic conditions on AMF development.…”

Diversity of Arbuscular Mycorrhizae Fungi from Orchard Ecosystem

“…Secondly, the occurrence of interspecific competition among AM fungi is possible in the soil and within roots [40]. Also seasonality, spatial and temporal variation, complex below ground structure, host-preference and disturbance are generally thought to coincide with the variation of AM fungi distribution and community structure [41][42][43][44][45]. For this study, sporulation ability, host-preference and complex below ground structure seem to be more influential in the distribution of mycorrhizal spores and community structure in orchard ecosystem.…”