Organelle variation

Organelle variation Often we assume that genes responsible for phenotypic variation resides in the nuclear genome. Now a group of international researchers show in PNAS that also genes located in organelles are contributing to phenotypic variation. Organelles like mitochondria and chloroplasts contain genetic material, remnants of ancient symbiotic ancestors. Genes essential for function of theContinue reading “Organelle variation”

Shredding dead cells for protection

Shredding dead cells for protection Interestingly microbes are not colonising the root tip. Now researchers show in eLife that is because the tip protecting root cap is actively shredding death cells. Microbes are actively colonising plant roots. Except the growth centre containing tip of the root, which stays free of microbes. The root tip isContinue reading “Shredding dead cells for protection”

Decoy for cytokinin

Decoy for cytokinin Hormone signalling is regulated in multiple ways. Now researchers in Molecular Plant show a new way: using a decoy to regulate cytokinin signalling. The use of a decoy in the form of non-functioning receptors is known strategy in mammalian cells. But in plants this was up till now unknown. The researchers stumbledContinue reading “Decoy for cytokinin”

Pressurised division

Pressurised division How a cell divides influences how a plant looks. A new study in Developmental Cell shows how the orientation of microtubules influences were the orientation of the dividing wall in the dividing cell. Due to their cell wall plant cells are connected to each other. In this way the orientation of a cellContinue reading “Pressurised division”