Insulin resistance is a condition in which insulin signaling and action are impaired in insulin sensitive tissues and result in hyperglycemia, hyperlipidemia, and type 2 diabetes mellitus. Our previous studies have shown that Rosa damascena has antihyperglycemic effects on diabetic and normal rats. Therefore, we conducted a study to evaluate the effect of this medicinal plant on insulin sensiti...

In many parts of Iran high light intensities during summer can induce stress in cut flower production under open field and greenhouse conditions. Despite roses prefer sunny places for optimum growth, but in practice some levels of rough shading is applied in greenhouse production to improve the quality of cut flowers. So, it is useful to find the light intensities under which different rose cul...

Pine wilt disease (PWD), a destructive disease for pine trees, is caused by the pine wood nematode (PWN), Bursaphelenchus xylophilus and additional bacteria. In this study, extracts of Zostera marina showed a high nematicidal activity against PWN and some of the bacteria that it carries. Light yellow crystals were obtained from extracts of Z. marina through solvent extraction, followed by chrom...

Rose is the most economically important ornamental plant. However, cold stress seriously affects survival and regrowth of garden roses in northern regions. Cold acclimation was studied using two genotypes (Rosa wichurana R. hybrida ‘Yesterday’) selected from a rose breeding program. During winter season (November to April), hardiness stems, soluble sugar content, expression dehydrins related ke...

The study of the regulatory mechanism exogenous plant growth regulators (PGRs) on relevant physiological indicators is essential to maintain normal Rosa hybrida under high-temperature conditions. photosynthetic and characteristics ornamental cut rose ‘Carolla’ high temperature were studied by spraying leaves with various concentrations salicylic acid (SA; 0.5, 1.0, 1.5, or 2.0 mmol·L−1), 6-benz...