Mechri Beligh, Attia Faouzi, Tekaya Meriem, Cheheb Hechmi, Hammami Mohamed
Laboratoire de Biochimie, USCR Spectrométrie de Masse, LR-NAFS/LR12ES05 Nutrition-aliments fonctionnels et santé vasculaire, Faculté de Médecine, université de Monastir, 5019 Monastir, Tunisia.
Equipe Recherches Agronomiques, Agronutrition, 3 avenue de l'Orchidée, Parc Activestre, Carbonne 31390, France.
J Plant Physiol. 2014 Sep 1;171(14):1217-20. doi: 10.1016/j.jplph.2014.04.005. Epub 2014 Apr 22.
The influence of arbuscular mycorrhizal (AM) fungi colonization on photosynthesis, mineral nutrition, the amount of phospholipids and glycolipids in the leaves of olive (Olea europaea L.) trees was investigated. After six months of growth, the rate of photosynthesis, carboxylation efficiency, transpiration and stomatal conductance in mycorrhizal (M) plants was significantly higher than that of non-mycorrhizal (NM) plants. The inoculation treatment increased the foliar P and Mg but not N. The amount of glycolipids in the leaves of M plants was significantly higher than that of NM plants. However, the amount of phospholipids in the leaves of M plants was not significantly different to that in the leaves of NM plants. Also, we observed a significant increase in the level of α-linolenic acid (C18:3ω3) in glycolipids of M plants. This work supports the view that increased glycolipids level in the leaves of M plants could be involved, at least in part, in the beneficial effects of mycorrhizal colonization on photosynthesis performance of olive trees. To our knowledge, this is the first report on the effect of AM fungi on the amount of glycolipids in the leaves of mycorrhizal plants.
研究了丛枝菌根（AM）真菌定殖对油橄榄（Olea europaea L.）树叶片光合作用、矿质营养、磷脂和糖脂含量的影响。生长六个月后，菌根（M）植株的光合作用速率、羧化效率、蒸腾作用和气孔导度显著高于非菌根（NM）植株。接种处理提高了叶片中的磷和镁含量，但对氮含量没有影响。M植株叶片中的糖脂含量显著高于NM植株。然而，M植株叶片中的磷脂含量与NM植株叶片中的磷脂含量没有显著差异。此外，我们观察到M植株糖脂中α-亚麻酸（C18:3ω3）水平显著增加。这项工作支持了这样一种观点，即M植株叶片中糖脂水平的提高可能至少部分参与了菌根定殖对油橄榄树光合作用性能的有益影响。据我们所知，这是关于AM真菌对菌根植物叶片中糖脂含量影响的首次报道。
