Ms Kayla Alexis Midgley



PhD student

Department

Biochemistry, Genetics and Microbiology
Short CV
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Primary Supervisor
Velushka Swart

Co Supervisor
Noelani van den Berg

I am currently a Doctoral candidate in Genetics within the Hans Merensky Avocado Research Programme, under the supervision of Dr. Velushka Swart and Professor Noëlani van den Berg.

I completed my Bachelor’s degree in Biotechnology at the University of Pretoria in 2019. In 2020, I joined the Hans Merensky Avocado Research Programme to pursue my Honours degree in Genetics, during which I identified and validated crinkling and necrosis (CRN) genes from the Phytophthora cinnamomi transcriptome during avocado infection.

I went on to obtain my Master’s degree with distinction in Genetics in 2023 as part of the same research group. My dissertation, titled “Identification and expression analysis of Phytophthora cinnamomi CRN effector genes during infection of Persea americana (Mill.)”, expanded on my Honours research. I molecularly characterised P. cinnamomi CRN genes and proposed their potential roles in modulating plant cell death. This work involved analysing CRN expression during the biotrophic and necrotrophic stages of avocado infection, sequencing CRN coding regions, conducting phylogenetic analyses, and performing protein modelling. The study identified several CRN candidates with putative functions as cell death inducers or suppressors. Furthermore, allelic variation was detected in many CRN genes, suggesting possible functional diversity among the encoded proteins. These findings laid the groundwork for future investigations into the molecular mechanisms employed by P. cinnamomi during host infection.

My PhD builds directly on this foundation and focuses on the functional characterisation of P. cinnamomi CRN proteins. I am investigating their roles in cell death manipulation using Agrobacterium-mediated transient transformation, confocal microscopy, and western blotting. In addition, I aim to optimise a CRISPR-Cas gene-editing system to knock out key candidate CRN genes in P. cinnamomi, enabling detailed investigation of their contributions to pathogenicity and virulence during avocado infection.

The Southern African Society for Plant Pathology (SASPP)

The British Society for Plant Pathology (BSPP)


  • Awarded the Grace Waterhouse Fellowship by the British Society for Plant Pathology (BSPP) to fund a research visit to The James Hutton Institute in 2025.
  • Received a scholarship on behalf of the French Phytopathological Society & The International Society for Plant Pathology, to attend the 12th annual International Congress of Plant Pathology (ICPP2023) in Lyon, France.
  • Acknowledged as one of the top five student presenters at the 52nd Congress of the South African Society of Plant Pathology (SASPP2022).

Midgley KA., van den Berg N., Boevink P., Swart V. Cracking the code on Phytophthora cinnamomi CRN effectors and their role in plant cell death. Poster presentation at the 2025 International Society of Molecular Plant-Microbe Interactions Congress; 13-17 July 2025, Cologne, Germany. 

Midgley KA., van den Berg N., Backer R., Swart V. Identification of Phytophthora cinnamomi CRN effectors: Foot soldiers of Phytophthora Root Rot. Poster presentation at the 12th International Congress of Plant Pathology; 20-25 August 2023, Lyon, France. 

Midgley KA, van den Berg N, Swart V. Phytophthora cinnamomi CRN effectors and their roles in manipulating cell death to maintain their hemi-biotrophic life-style. Presentation presented at the 52nd Congress of the South African Society for Plant Pathology; 2022 August 1-3; Pretoria, South Africa.

Midgley KA, Backer R, Swart V & Van den Berg N. Characterising the role of Phytophthora cinnamomi CRN effectors in host plant cell death. South African Society for Bioinformatics – South Africa Genetics Society; 2021 September 2021.

 


My Galeries

Tzaneen June 2021 field trip

ICPP 2023, France

SASPP 2022

JHI research visit 2025, Scotland

IS-MPMI 2025, Germany

News

FABI fabulous at the International Congress of Plant Pathology

FABI had a strong presence at the ICPP 2023 with 19 delegates attending from the Institute.

FABI hosts the 52nd Congress of the SASSP

FABI hosted the 52nd Congress of the Southern African Society for Plant Pathologists (SASSP) at the Future Africa campus from 1-3 August.

Export to RIS
Publication
Midgley KA, van den Berg N, Swart V. (2024) Identification of Phytophthora cinnamomi CRN effectors and their roles in manipulating cell death during Persea americana infection. BMC Genomics 25:435. 10.1186/s12864-024-10358-3
Midgley KA, van den Berg N, Swart V. (2022) Unraveling plant cell death during Phytophthora Infection. Microorganisms 10(6) 10.3390/microorganisms10061139 PDF