In anterior cruciate ligament (ACL) reconstruction, slow graft maturation may result in graft failure or elongation during the postoperative rehabilitation period. Vascular endothelial growth factor (VEGF) is a potent mediator of angiogenesis. The findings of recent studies suggest that VEGF application is a potential strategy to accelerate angiogenesis in the graft after ACL reconstruction. Ho...

The effects of exogenous abscisic acid (ABA) on the acclimation of Picea asperata to water deficit were investigated in two populations originating from wet and dry climate regions of China. Exogenous ABA was sprayed onto the leaves, and changes in plant growth and structure, gas exchange, water use efficiency (WUE), endogenous ABA content, and antioxidant enzyme levels were monitored. The resu...

Exogenously applied glycinebetaine (GB) accumulates at high levels in maize (Zea mays L.). Under water deficit and high temperature conditions GB application produces yield benefits. These sub-optimum conditions often result in high levels of aflatoxin accumulation which reduces grain quality. A 3-year (2008, 2009 and 2010) field experiment was conducted to determine the effects of GB on ma...

In order to investigate the physiological effects of exogenous γ-aminobutyric acid (GABA) on drought tolerance in white clover (Trifolium repens), GABA shunt, polyamines (PAs), and proline (Pro) metabolism were examined after plants pretreated with or without GABA (8 mM) and then exposed to water or 15% PEG-induced drought stress in growth chamber. In this study, exogenous application of GABA e...

Abstract In this study ameliorative effects of ascorbic acid (0.5 mM) on onion (Allium cepa L. cv. Red Azarshahr) under copper stress (Cu: 6.5 μM) were studied. Fresh weights of leaves and roots were reduced in seven week old plants under excess copper condition. Cu stress also reduced membrane stability index in leaves. There was a considerable increase in H2O2 content and lipid peroxidation i...

the response of five inbred sunflower seedling lines, including ac 4122, c, ha 89, ha 410, ha 411, to inoculation with sclerotinia sclerotiorum culture filtrate containing endogenous oxalic acid was compared with the exogenous application of synthetic oxalic acid. the reaction of seedlings was evaluated in terms of dry and fresh plant weights and the total chlorophyll concentration relative to ...

Low temperature is the most common abiotic stress factor in peanut cultivation. Chitooligosaccharide (COS) plays an important role low-temperature resistance plants, however, of COS regulating cold tolerance peanuts not clear. This research investigated effects exogenous on seedlings response to low temperatures. The results showed that can significantly alleviate cooling symptoms by reducing c...