In yeast and filamentous fungi, sulfide can be condensed either with O-acetylhomoserine to generate homocysteine, the precursor of methionine, or with O-acetylserine to directly generate cysteine. The resulting homocysteine and cysteine can be interconverted through transsulfuration pathway. Here, we systematically analyzed the sulfur metabolic pathway of the thermotolerant methylotrophic yeast...

Following the physical mapping of Chlamydomonas moewusii chJoroplastic DNA (1), we selected clones on the basis of their hybridization with positively light-regulated transcripts from the same organism (2, 3). One such clone containing a 13.5 kb insert was subcloned and a SaR-Xbal 2.4 kb fragment sequenced. It contained, among other features, a 1,689 bp ORF 563 (4) similar to ORF 513 from the c...

The evolution of land flora transformed the terrestrial environment. Land plants evolved from an ancestral charophycean alga from which they inherited developmental, biochemical, and cell biological attributes. Additional biochemical and physiological adaptations to land, and a life cycle with an alternation between multicellular haploid and diploid generations that facilitated efficient disper...

Photoperiodic control of the phase transition from vegetative to reproductive growth is critical for land plants. The GIGANTEA (GI) and FLAVIN-BINDING KELCH REPEAT F-BOX1 (FKF1) protein complex controls this process in angiosperms. However, little is known about how plants evolved this regulatory system. Here, we report that orthologues of GI and FKF1 are present in a basal plant, the liverwort...

The colonisation of the land by plants was accompanied by the evolution of complex tissues and multicellular structures comprising different cell types as morphological adaptations to the terrestrial environment. Here, we show that the single WIP protein in the early-diverging land plant Marchantia polymorpha L. is required for the development of the multicellular gas exchange structure: the ai...

1. Accumulation of organic material by the zebra mussel Dreissena polymorpha is assumed to be the source of a biodeposition-based food web. However, only little is known about the importance of the biodeposited material as a food source and its contribution to increased abundances of macroinvertebrates in the presence of D. polymorpha. 2. Feeding, assimilation and growth of the amphipods Gammar...

In the methanol-utilizing yeast Hansenula polymorpha, glucose and ethanol trigger the repression of peroxisomal enzymes at the transcriptional level, and rapid and selective degradation of methanol-induced peroxisomes by means of a process termed pexophagy. In this report we demonstrate that deficiency in the putative H. polymorpha homologues of transcriptional repressors Mig1 (HpMig1 and HpMig...

Allelopathy is described as the positive or negative effect that one plant causes on growing of another, which occurs through reléase chemical components to environment. The 'tarwi', Lupinus mutabilis Sweet., a native legume from Andean region whose seeds have high protein content, however, these bitter taste due presence alkaloids, metabolites been reported allelochemical components, uses in ...