Pohlia tundrae Shaw (Bryaceae, Musci) in Russia

CYTOTAXONOMIC STUDIES IN WEST HIMALAYAN BRYACEAE (MUSCI)

The meiotic chromosomes of 10 species (Pohlia elongata, Anomobryum cymbifolium, Brachymenium acuminatum, B. ochianum, B. sikkimense, Bryum cellulare, B. pseudotriquetrum, B. apiculatum, B. capillare and B. atrovirense), in four genera of the family Bryaceae of acrocarpous mosses are studied with special emphasis on their evolution, polyploidy and cytological features with reference to interrela...

26-31 Musci Feature

ITE JOURNAL / JANUARY 2003 INTRODUCTION Approaches to combat urban traffic congestion span from demand management to physical expansion of road capacity. Attempts to shift a part of peak travel from car to high-quality public transit and to times when roads are relatively less crowded sometimes have been successful.1,2 Also, intelligent transportation systems (ITS) have the promise to optimize ...

Long-lived sperm in the geothermal bryophyte Pohlia nutans.

Non-vascular plants rely on sperm to cross the distance between male and female reproductive organs for fertilization and sexual reproduction to occur. The majority of non-vascular plants have separate sexes, and thus, this distance may be a few millimetres to many metres. Because sperm need water for transport, it has been assumed that sperm lifespans are short and that this type of sexual rep...

Shaw pagesrc.indd

Three decades of basic cancer research have revealed that mutations in components of signalling pathways that control cell growth in primitive metazoans underlie tumour initiation in mammals. The Ras, PI(3)K and mTOR (mammalian target of rapamycin) signalling pathways form an intersecting biochemical network that, when mutated, drives cell growth in a manner unrestricted by environmental cues. ...

Eric Shaw