In view of the mutualistic facilitation of invasive plants, we examined the mycorrhizal status of 469 species, including 335 alien and 134 native to the region of Kashmir Himalaya, India. Data on the mycorrhizal status and altitudinal range of the target species were obtained using some peer reviewed primary published and web based sources. One sample Z score test and regression analysis were performed to workout the relative proportion of mycorrhizal and non-mycorrhizal plants in different altitudinal belts and relationship of mycorrhizal symbiosis with increasing altitude, respectively. With increasing altitude, the mycorrhizal association of both the alien and native plant species showed a decreasing trend, although alien plant species showed much stronger negative values than native species do. Both aliens and native species showed significantly higher proportion of mycorrhizal species compared to non-mycorrhizal counterparts in all the vegetation zones (Temperate, Montane, Sub-alpine and Alpine). Interestingly, in none of the vegetation zones do aliens and natives differ in terms of their mycorrhizal and non-mycorrhizal species fractions, suggesting that change in mycorrhizal symbioses along any elevational gradient occurs more due to restrictions on mycorrhizal fungi survival than due to the identity of the species concerned. These trends call for further studies at wider geographical scales to better understand the mechanisms and implications of mycorrhizal associations for managementof alien plant invasion in such eco-climatically sensitive regions, especially in the context of climate change.

中文翻译：

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克什米尔喜马拉雅山沿海拔梯度植物入侵的菌根互生动力学

鉴于入侵植物的共生促进作用，我们检查了 469 种物种的菌根状况，其中 335 种外来植物和 134 种原产于印度克什米尔喜马拉雅地区。目标物种的菌根状态和海拔范围的数据是使用一些同行评审的主要出版和基于网络的来源获得的。通过1个样本Z值检验和回归分析，分别考察了不同海拔带中菌根植物与非菌根植物的相对比例以及菌根共生与海拔升高的关系。随着海拔的升高，外来植物与本土植物的菌根关联度均呈下降趋势，但外来植物物种的负值远大于本土物种。在所有植被区（温带、山地、亚高山和高山），外来物种和本地物种的菌根物种比例均显着高于非菌根物种。有趣的是，在所有植被区中，外星人和本地人的菌根和非菌根物种分数都没有差异，这表明菌根共生体沿任何海拔梯度发生的变化更多是由于对菌根真菌生存的限制，而不是由于菌根真菌的特性。有关的物种。这些趋势要求在更广泛的地理范围内进行进一步研究，以更好地了解菌根关联在这些生态气候敏感地区，尤其是在气候变化背景下管理外来植物入侵的机制和影响。