Publications by authors named "C M J Pieterse"
We detail the REACH radiometric system designed to enable measurements of the 21-cm neutral hydrogen line. Included is the radiometer architecture and end-to-end system simulations as well as a discussion of the challenges intrinsic to highly-calibratable system development. Following this, we share laboratory results based on the calculation of noise wave parameters utilising an over-constrained least squares approach.
View Article and Find Full Text PDFPotato vigour, the growth potential of seed potatoes, is a key agronomic trait that varies significantly across production fields due to factors such as genetic background and environmental conditions. Seed tuber microbiomes are thought to influence plant health and crop performance, yet the precise relationships between microbiome composition and potato vigour remain unclear. Here we conducted microbiome sequencing on seed tuber eyes and heel ends from 6 potato varieties grown in 240 fields.
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- Potato cultivation in Ecuador's Andes, particularly the Superchola cultivar, accounts for 60% of the country's potato production, with significant observations made from November 2022 to January 2023 related to stem lesions on these plants.
- An investigation of symptomatic plants led to the isolation of 14 bacterial strains, with one (M3) identified as pathogenic, causing lesions on potato tubers and stems.
- Pathogenicity tests confirmed that only isolate M3 induced disease symptoms in healthy potato plants using specific inoculation techniques.
Article Synopsis
- The plant hormone abscisic acid (ABA) plays a key role in regulating plant development and stress responses by triggering a complex gene regulatory network involving many transcription factors (TFs) and genes.
- An RNA-seq time series identified 7151 differentially expressed genes in response to ABA treatment, which were organized into 44 coexpressed modules responsible for various biological functions.
- The study further analyzed TF regulation and interaction within the ABA gene regulatory network, highlighting the significance of the bZIP TF family and identifying GT3a as a positive regulator of drought tolerance, validated by drought assays.
Plants have coevolved together with the microbes that surround them and this assemblage of host and microbes functions as a discrete ecological unit called a holobiont. This review outlines plant-driven assembly of disease-suppressive microbiomes. Plants are colonized by microbes from seed, soil, and air but selectively shape the microbiome with root exudates, creating microenvironment hot spots where microbes thrive.
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