Camargo-Ricalde Sara Lucía, Dhillion Shivcharn S, Jiménez-González Carolina
Department of Biology and Nature Conservation, Agricultural University of Norway, P.O. Box 5014, 1432 As, Norway.
Mycorrhiza. 2003 Apr;13(2):77-83. doi: 10.1007/s00572-002-0203-8. Epub 2002 Oct 19.
We investigated the mycorrhizal status of perennial xeric plant species occurring in the "matorral xerófilo" (arid tropical scrub) and the ecotone of the "selva baja caducifolia" (tropical deciduous forest) communities in the semiarid valley of Tehuacán-Cuicatlán, south-central Mexico. The perennial species examined are dominant/codominant elements within the "matorral xerófilo" and the "selva baja caducifolia", both endangered communities in the Biosphere Reserve Tehuacán-Cuicatlán 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 Zornia, and in one plant family, Buddlejaceae. Beaucarnea 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.
我们调查了墨西哥中南部特瓦坎-库伊卡特兰半干旱山谷中“干旱热带灌丛”（旱生热带灌丛）以及“低地落叶林”（热带落叶林）群落交错带中多年生旱生植物物种的菌根状况。所研究的多年生物种是“干旱热带灌丛”和“低地落叶林”中的优势/共优势元素，这两个群落均为特瓦坎-库伊卡特兰山谷生物圈保护区内的濒危群落。在50个采样物种中，有45种具有菌根。据我们所知，我们首次在37个物种中报道了丛枝菌根（AM），其中21种为墨西哥特有，9种为该山谷特有。我们还首次在三个属（醉鱼草属、赫氏凤梨属和合萌属）以及一个植物科（醉鱼草科）中报道了丛枝菌根。受威胁物种细叶酒瓶兰和可能稀有的物种普尔普氏含羞草均具有菌根。这是对该山谷内植物物种菌根状况的首次研究。
