Recent Posts

Direct conversion of carlactonoic acid to orobanchol by cytochrome P450 CYP722C in strigolactone biosynthesis

Strigolactones (SL) are a compounds that play important roles as phytohormones and as a rhizosphere signaling. Despite the great advances in their research that occurred recently, their biosynthetic pathway is still not well understood. Until now, the pathway leading to the precursor carlactonic…

Pheophorbide a may regulate jasmonate signaling during dark-induced senescence

During leaf senescence, nitrogen-rich chlorophyll is broken down through a regulated process so that nitrogen-containing compounds can be reassimilated into the plant body. Chlorophyll catabolites are sequestered in the vacuole as linear tetrapyrroles known as phyllobilins, produced through the action…

Attractive flower smell turned into defense barrier

Boachon et al. explore metabolic processes associated with floral defense. Plant Cell https://doi.org/10.1105/tpc.19.00320 By Benoît Boachon, University of Lyon, UJM-Saint-Etienne, CNRS, BVpam FRE 3727, Saint-Etienne, France. Danièle Werck-Reichhart, Institute of Plant Molecular Biology of…

Dynamic control of plant water use using designed ABA receptor agonists (Science)

ABA is synthesized in response to water stress and promotes stomatal closure, thus decreasing transpiration. Crop yields can be increased by controlling transpiration early in the growing season, ensuring that soil water resources persist through the seed-set period. Building upon earlier studies, Vaidya,…

A Simple and sensitive SYBR Gold-based assay to quantify DNA-Protein interactions ($) (Plant Molecular Biology)

Gene regulation occurs at multiple levels including transcription. During transcription, transcriptional factors bind to specific target sequence which allows the recruitment of other proteins including RNA polymerase that enables transcription. Understanding such an intricate mechanism allows researchers…

Auronidins are a previously unreported class of flavonoid pigments that challenge anthocyanin biosynthesis evolved in plants (OA) (PNAS)

Plants produce pigments as a protective strategy against biotic and abiotic stress. In angiosperms, anthocyanins are the main flavonoids that play a role in this function. As the early-diverging land plant, Marchantia polymorpha also produces red pigments in response to environmental conditions, it was…

The “Ins and Outs” of ER–Chloroplast Lipid Trafficking

Karki et al. revisit the long-standing question of how and where lipid trafficking occurs during galactolipid synthesis. They report evidence for metabolically distinct pools of phosphatidylcholine, suggesting an underlying spatial organization in the ER–chloroplast metabolic interactions. Plant Cell…

Identification of calmodulin-dependent NAD+ kinase that sustains the elicitor-induced oxidative burst (Plant Phys)

When pathogens attack, one line of defense is the production of a burst of reactive oxygen species (ROS) which triggers additional defences. ROS is produced by the action of NADPH oxidases, which require NADPH as a substrate; NADPH is derived from NADP+, but where does this come from? Previous studies…

Ethylene-mediated nitric oxide depletion pre-adapts plants to hypoxia stress (Nature Comms)

Climate projection models predict an increasingly wetter world with frequent and severe flooding events, causing loss of crops. As it is for other organisms, it is a challenge for plants to stay under water for long periods. However, how plants react to submergence is poorly understood. Environmental…