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Camargi-Ricalde SL; Dhillion SS; Jimenez-Gonzalez C. 2003. Mycorrhizal perennials of the "matorral xerofilo" and the "selva baja caducifolia" communities in the semiarid Tehuacan-Cuicatlan Valley, Mexico. MYCORRHIZA. 13(2):77-83. Address: Camargi-Ricalde SL, Univ Autonoma Metropolitana Iztapalapa, Div Ciencias Biol & Salud, Dept Biol, A Postal 55-535, Mexico City 09340, DF, Mexico
We investigated the mycorrhizal status of perennial xeric plant species occurring in the "matorral xerofilo" (arid tropical scrub) and the ecotone of the "selva baja caducifolia" (tropical deciduous forest) communities in the semiarid valley of Tehuacan-Cuicatlan, south-central Mexico. The perennial species examined are dominant/codominant elements within the "matorral xerofilo" and the "selva baja caducifolia", both endangered communities in the Biosphere Reserve Tehuacan-Cuicatlan Valley. Of the 50 sampled species, 45 were mycorrhizal. To our knowledge, we report arbuscular mycorrhizae (AM) for the first time in 37 species, of which 21 are endemic to Mexico and nine are endemic to the Valley. We also report AM for the first time in three genera, Buddleja, Hechtia and Zomia, and in one plant family, Buddlejaceae. Beaucamea gracilis, a threatened species, and Mimosa purpusii, a potentially rare species, are both mycorrhizal. This is the first study of the mycorrhizal status of plant species within the Valley.
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