GENETICS: Shoots and Leaves
نویسندگان
چکیده
منابع مشابه
Differentiating Arabidopsis shoots from leaves by combined YABBY activities.
In seed plants, leaves are born on radial shoots, but unlike shoots, they are determinate dorsiventral organs made of flat lamina. YABBY genes are found only in seed plants and in all cases studied are expressed primarily in lateral organs and in a polar manner. Despite their simple expression, Arabidopsis thaliana plants lacking all YABBY gene activities have a wide range of morphological defe...
متن کاملPneumoviruses: Molecular Genetics and Reverse Genetics
Pneumoviruses are responsible for significant respiratory disease in their hosts and represent a major problemfor human and animal health. Pneumoviruses are members of the family Paramyxoviridae, subfamilyPneumovirinae and the virus particles consist of a negative-sense, nonsegmented RNA genome within a helical nucleocapsid structure enveloped in a lipid membrane derived from the ho...
متن کاملThe origin and early evolution of vascular plant shoots and leaves
The morphology of plant fossils from the Rhynie chert has generated longstanding questions about vascular plant shoot and leaf evolution, for instance, which morphologies were ancestral within land plants, when did vascular plants first arise and did leaves have multiple evolutionary origins? Recent advances combining insights from molecular phylogeny, palaeobotany and evo-devo research address...
متن کاملDevelopmental genetics of mutants that specify knotted leaves in maize.
Of seven dominant knotted-leaf mutants tested, six mapped at or near Kn1 on the long arm of chromosome 1, and one was not linked to Kn1. Comparisons of phenotypes among these mutants allowed us to focus on a systematic abnormality: the parenchyma cells associated with lateral veins do not fully differentiate into bundle sheath, mesophyll or upper sclerenchyma. The more dramatic expression of Kn...
متن کاملGreen shoots
By the end of this year, when Germany crowns the 'word of the year', one of the strongest contenders to replace last year's 'Finanzkrise' (financial crisis) has to be the almost unpronounceable 'Abwrackprämie' or scrappage fee. Introduced with effect from 27 January under the original name of 'Umweltprämie' (environment reward) with a strictly limited budget, this scheme pays out 2,500 Euros to...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Science
سال: 2006
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.313.5786.411c