May 19, 2017 - The shoot apical meristem (SAM) is a small population of stem cells that continuously generates organs and tissues. We will discuss here flower formation at the SAM, which involves a complex network of regulatory genes and signalling molecules. A

Ursula Abad, Massimiliano Sassi, Jan Traas

Mar 5, 2018 - The integrity of chromosome ends, or telomeres, depends on myriad processes that must balance the need to compact and protect the telomeric, G-rich DNA from detection as a double-stranded DNA break, and yet still permit access to enzymes that process

Lea Harrington, Fabio Pucci

Jan 1, 1906 - In a paper published in 1900 a description was given of certain pathological outgrowths, first called intumescences by Sorauer, but known as œdemata to American writers, occurring spontaneously on Hibiscus vitifolius, Linn. The paper is mainly

Jul 19, 2016 - Genome sequencing studies of de novo mutations in humans have revealed surprising incongruities in our understanding of human germline mutation. In particular, the mutation rate observed in modern humans is substantially lower than that estimated

Aylwyn Scally

Oct 6, 2017 - Many of the most important evolutionary variations that generated phenotypic adaptations and originated novel taxa resulted from complex cellular activities affecting genome content and expression. These activities included (i) the symbiogenetic

James A. Shapiro

Aug 12, 2011 - Modern stem cell biology has achieved a transformation that was thought by many to be every bit as unattainable as the ancient alchemists' dream of transforming base metals into gold. Exciting opportunities arise from the process known as

Ian Wilmut, Gareth Sullivan, Ian Chambers

Oct 6, 2015 - Sap transport in trees has long fascinated scientists, and a vast literature exists on experimental and modelling studies of trees during the growing season when large negative stem pressures are generated by transpiration from leaves. Much less

Isabell Graf, Maurizio Ceseri, John M. Stockie

Dec 4, 1984 - We have used differential cDNA cloning techniques to isolate a number of genes that are activated as a result of transformation by the DNA tumour virus Simian virus 40. From the nucleotide sequences of the cDNA clones we have been able to identify

Jan 12, 2011 - Telomeres protect the chromosome ends from unscheduled DNA repair and degradation. Telomeres are heterochromatic domains composed of repetitive DNA (TTAGGG repeats) bound to an array of specialized proteins. The length of telomere repeats and the

Luis E. Donate, Maria A. Blasco