Publications by authors named "Anne Greifenhagen"
The peptide hormone CLE1 stimulates haustorium formation in the parasitic plant .
Proc Natl Acad Sci U S A
October 2024
Article Synopsis
- The text discusses the hemiparasitic plant from the Orobanchaceae family, which siphons water and nutrients from other plants via root structures called haustoria.
- It highlights the role of an endogenous peptide hormone, CLE1, in triggering the initial formation of these haustoria by enhancing responses to host-derived factors.
- CLE1 is indicative of a regulatory mechanism that supports continuous resource extraction from host plants, similar to how CLE hormones influence nodulation in legumes.
The hemiparasitic plant Phtheirospermum japonicum (Phtheirospermum) is a nutritional specialist that supplements its nutrient requirements by parasitizing other plants through haustoria. During parasitism, the Phtheirospermum haustorium transfers hypertrophy-inducing cytokinins (CKs) to the infected host root. The CK biosynthesis genes required for haustorium-derived CKs and the induction of hypertrophy are still unknown.
View Article and Find Full Text PDFA special domain of the thylakoid membrane of higher plants has been isolated which carries out the de-epoxidation of the xanthophyll cycle pigment violaxanthin to zeaxanthin. Recent models indicate that in the chloroplast of higher plants, the violaxanthin (V) cycle takes place within specialized domains in the thylakoid membrane. Here, we describe a new procedure to directly isolate such a domain in functional state.
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