BACKGROUND AND AIMS Changes in number of trichomes and in composition and concentrations of their exudates throughout leaf development may have important consequences for plant adaptation to abiotic and biotic factors. In the present study, seasonal changes in leaf trichomes and epicuticular flavonoid aglycones in three Finnish birch taxa (Betula pendula, B. pubescens ssp. pubescens, and B. pub...

Trichomes are hair-like structure that originated from aerial epidermis cells and are found in most plant species, trichomes exposed to various adverse conditions including gamma radiations and ultra violet radiations and herbivore attack insects and pests. Trichome initiation, formation, and development is regulated by some specific group of gene, transcription factors, promoters and cis-regul...

Plants synthesize diverse diterpenoids with numerous functions in organ development and stress resistance. However, the role of glandular trichome (GT) GT-localized biosynthesis plants remains unknown. Here, identification 10 diterpene synthases (diTPSs) revealed diversity diterpenoid Artemisia annua. Protein–protein interactions (PPIs) between AaKSL1 AaCPS2 plastids highlighted their potential...

Cryofixation and conventional chemical fixation methods were employed to examine the ultrastructure of developing peltate glandular trichomes of peppermint (Mentha x piperita). Our results are discussed in relation to monoterpene production and the mechanism of essential oil secretion. Peltate glands arise as epidermal protuberances (initials) that divide asymmetrically to produce a vacuolate b...

The Colorado potato beetle, Leptinotarsa decemlineata (Say) Order Coleoptera and the potato leafhopper, Empoasca fabae (Harris) Order Homoptera, are the major insect pests of potato in eastern North America. In two years of field trials, we compared the effectiveness of three pest management options for the control of Colorado potato beetle and potato leafhopper: natural host plant resistance (...

Tribe Stachydeae with 12 genera were divided into two major clades: Melitis and Eurystachys clades consisting of all attributed to except Melittis. Recently, a broadly defined clade falling well-supported have been formally named in phylogenetic nomenclature. In the present study, trichomes 70 spp. from nine pollens 53 six investigated using scanning electron microscopy (SEM) order draw taxonom...

Plant glandular secretory trichomes (GSTs) produce various specialized metabolites. Increasing GST density represents a strategy to enhance the yield of these chemicals; however, gene regulatory network that controls initiation remains unclear. In previous study Artemisia annua L., we found HD-ZIP IV transcription factor, AaHD1, promotes by directly regulating AaGSW2. Here, identified two AaHD1...