División de Ciencias Ambientales, Instituto Potosino de Investigación Científica y Tecnológica, A.C. Camino a la Presa San José 2055, San Luis Potosí, San Luis Potosí, México.
Plant Signal Behav. 2010 Oct;5(10):1229-30. doi: 10.4161/psb.5.10.12835. Epub 2010 Oct 1.
Recently, we found that fungi are involved in breaking seed dormancy of Opuntia streptacantha, and that the effect of fungi on seeds is species-specific. However, the effect of fungi on seed germination from other Opuntia spp has not been evaluated. Thus, we evaluated the effect of four fungal species (Penicillium chrysogenum, Phoma sp., Trichoderma harzianum, Trichoderma koningii) on the germination of Opuntia leucotricha, an abundant species in the Chihuahuan Desert, Mexico. We found that seeds inoculated with the four fungal species had higher germination than control seeds. Trichoderma spp. were the most effective. Our results strongly indicate that fungi are involved in breaking seed dormancy of O. leucotricha. Thus, we suggest that these fungi could promote seed germination from other Opuntia species.
最近，我们发现真菌参与了仙人掌属植物的打破种子休眠的过程，并且真菌对种子的作用具有物种特异性。然而，真菌对其他仙人掌属植物种子萌发的影响尚未得到评估。因此，我们评估了四种真菌（青霉素、拟茎点霉、哈茨木霉、康氏木霉）对墨西哥奇瓦瓦沙漠中丰富的白刺仙人掌种子萌发的影响。我们发现，与对照种子相比，接种了这四种真菌的种子具有更高的萌发率。哈茨木霉是最有效的。我们的研究结果强烈表明真菌参与了白刺仙人掌种子休眠的打破。因此，我们建议这些真菌可能会促进其他仙人掌属植物的种子萌发。
