Arabidopsis Research Round-up

It’s a strong week for the institutes this week with appearances in the Round-up from Rothamsted ResearchThe Sainsbury Laboratory and the John Innes CentreThe Sainsbury Laboratory at the University of Cambridge also gets a mention, as does the University of Glasgow also gets a mention with Emily Larson’s contribution to a newPlant Method.

 

This paper was a collaborative effort between scientists from Hong Kong, and Richard HaslamLouise Michaelson and Johnathan Napier from Rothamsted Research. Using quantitative, real-time PCR analysis, the researchers investigated whether target genes associated with acyl-lipid transfer, b-oxidation and triacylglycerol synthesis and hydrolysis were under diurnal control in early seedling growth. A number of differentially expressed genes between two and five-day old seedlings suggest that yes, lipid metabolism in Arabidopsis seedling development is under diurnal control.

 

Marie-Cecile Caillaud, affiliated to The Sainsbury Laboratory and the John Innes Centre, contributed to this New Phytologist paper investigating protein interactions during plant mitosis. Though the spindle assembly checkpoint (SAC) has been studied extensively in metazoans and yeast, little is known about the roles of microtubule-associated proteins in plants. This research demonstrates the key roles that the Arabidopsis SAC proteins BRK1, BUBR/MAD3 and their associates play in ensuring chromosomes do not segregate before they have properly formed kinetochore attachments.

 

Working with Korean colleagues, Jae-Hoon Jung from The Sainsbury Laboratory at Cambridge University contributed to this paper in which the role of the RNA-binding protein FCA is discussed in terms of heat stress. The researchers found that transgenic plants over-expressing the FCA gene were resistant to heat stress, while FCAdefective mutants were sensitive to it. It is proposed that FCA induces thermotolerance by triggering antioxidant accumulations under heat stress conditions.

 

Calling all root biologists! Here’s a new Plant Method for live cell labeling of roots with monoclonal antibodies that bind to specific cell wall polymers. Developed by researchers from the US and also involving Emily Larson from the University of Glasgow, the protocol allows for direct visualization of cell wall dynamics throughout development in stable transgenic plant lines.

 

This Chinese-led paper also involved Matthew Paul from Rothamsted Research, who provided data analysis and helped to prepare the manuscript. Here, the scientists demonstrate the ability of trehalose to improve Arabidopsis’ resistance to salt stress by regulating the redox state of the plant, as well as programmed cell death and distribution of ions.

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