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Regulation of Proline Accumulation and Protein Secretion in Sorghum under Combined Osmotic and Heat Stress. (2024)
Journal Article
Ngwenya, S. P., Moloi, S. J., Shargie, N. G., Brown, A. P., Chivasa, S., & Ngara, R. (2024). Regulation of Proline Accumulation and Protein Secretion in Sorghum under Combined Osmotic and Heat Stress. Plants, 13(13), Article 1874. https://doi.org/10.3390/plants13131874

Plants reprogramme their proteome to alter cellular metabolism for effective stress adaptation. Intracellular proteomic responses have been extensively studied, and the extracellular matrix stands as a key hub where peptide signals are generated/proc... Read More about Regulation of Proline Accumulation and Protein Secretion in Sorghum under Combined Osmotic and Heat Stress..

Carbon Monoxide Alleviates Salt-Induced Oxidative Damage in Sorghum bicolor by Inducing the Expression of Proline Biosynthesis and Antioxidant Genes (2024)
Journal Article
Ikebudu, V. C., Nkuna, M., Ndou, N., Ajayi, R. F., Chivasa, S., Cornish, K., & Mulaudzi, T. (2024). Carbon Monoxide Alleviates Salt-Induced Oxidative Damage in Sorghum bicolor by Inducing the Expression of Proline Biosynthesis and Antioxidant Genes. Plants, 13(6), Article 782. https://doi.org/10.3390/plants13060782

Crop growth and yield are affected by salinity, which causes oxidative damage to plant cells. Plants respond to salinity by maintaining cellular osmotic balance, regulating ion transport, and enhancing the expression of stress-responsive genes, there... Read More about Carbon Monoxide Alleviates Salt-Induced Oxidative Damage in Sorghum bicolor by Inducing the Expression of Proline Biosynthesis and Antioxidant Genes.

Exogenous abscisic acid treatment regulates protein secretion in sorghum cell suspension cultures. (2023)
Journal Article
Muthego, D., Moloi, S. J., Brown, A. P., Goche, T., Chivasa, S., & Ngara, R. (2023). Exogenous abscisic acid treatment regulates protein secretion in sorghum cell suspension cultures. Plant Signaling & Behavior, 18(1), Article 2291618. https://doi.org/10.1080/15592324.2023.2291618

Drought stress adversely affects plant growth, often leading to total crop failure. Upon sensing soil water deficits, plants switch on biosynthesis of abscisic acid (ABA), a stress hormone for drought adaptation. Here, we used exogenous ABA applicati... Read More about Exogenous abscisic acid treatment regulates protein secretion in sorghum cell suspension cultures..

Coapplication of water treatment residual and compost for increased phosphorus availability in arable sandy soils (2023)
Journal Article
Gwandu, T., Lukashe, N., Rurinda, J., Stone, W., Chivasa, S., Clarke, C., …Johnson, K. (2023). Coapplication of water treatment residual and compost for increased phosphorus availability in arable sandy soils. Journal of Sustainable Agriculture and Environment, 2(1), 68-81. https://doi.org/10.1002/sae2.12039

Introduction
Soil degradation coupled with poor access to organic nutrient resources remains a major constraint in increased crop productivity in sub-Saharan Africa, thus hindering the continent's efforts in achieving the United Nations' Sustainable... Read More about Coapplication of water treatment residual and compost for increased phosphorus availability in arable sandy soils.

Extracellular ATP targets Arabidopsis RIBONUCLEASE 1 to suppress mycotoxin stress-induced cell death (2022)
Journal Article
Goodman, H. L., Kroon, J. T., Tomé, D. F., Hamilton, J. M., Alqarni, A. O., & Chivasa, S. (2022). Extracellular ATP targets Arabidopsis RIBONUCLEASE 1 to suppress mycotoxin stress-induced cell death. New Phytologist, 235(4), 1531-1542. https://doi.org/10.1111/nph.18211

Extracellular ATP is a purinergic signal with important functions in regulating plant growth and stress-adaptive responses, including programmed cell death. While signalling events proximate to receptor activation at the plasma membrane have been cha... Read More about Extracellular ATP targets Arabidopsis RIBONUCLEASE 1 to suppress mycotoxin stress-induced cell death.

A nation that rebuilds its soils rebuilds itself- an engineer's perspective (2022)
Journal Article
Johnson, K. L., Gray, N. D., Stone, W., Kelly, B. F., Fitzsimons, M. F., Clarke, C., …Gwandu, T. (2022). A nation that rebuilds its soils rebuilds itself- an engineer's perspective. Soil security, 7, Article 100060. https://doi.org/10.1016/j.soisec.2022.100060

Nations can build and rebuild degraded soils to help address climate change and potentially improve the nutritional content of food if we change policies that allow the addition of safe mineral and organic wastes to soil. We present a framework that... Read More about A nation that rebuilds its soils rebuilds itself- an engineer's perspective.

Waste to resource: use of water treatment residual for increased maize productivity and micronutrient content (2021)
Journal Article
Gwandu, T., Blake, L., Nezomba, H., Rurinda, J., Chivasa, S., Mtambanengwe, F., & Johnson, K. (2022). Waste to resource: use of water treatment residual for increased maize productivity and micronutrient content. Environmental Geochemistry and Health, 44(10), 3359-3376. https://doi.org/10.1007/s10653-021-01100-z

Soil degradation, which is linked to poor nutrient management, remains a major constraint to sustained crop production in smallholder urban agriculture (UA) in sub-Saharan Africa (SSA). While organic nutrient resources are often used in UA to complem... Read More about Waste to resource: use of water treatment residual for increased maize productivity and micronutrient content.

Sorghum’s Whole-Plant Transcriptome and Proteome Responses to Drought Stress: A Review (2021)
Journal Article
Ngara, R., Goche, T., Swanevelder, D. Z. H., & Chivasa, S. (2021). Sorghum’s Whole-Plant Transcriptome and Proteome Responses to Drought Stress: A Review. Life, 11(7), Article 704. https://doi.org/10.3390/life11070704

Sorghum is a cereal crop with key agronomic traits of drought and heat stress tolerance, making it an ideal food and industrial commodity for hotter and more arid climates. These stress tolerances also present a useful scientific resource for studyin... Read More about Sorghum’s Whole-Plant Transcriptome and Proteome Responses to Drought Stress: A Review.

Isolation of Arabidopsis extracellular ATP‐binding proteins by affinity proteomics and identification of PHOSPHOLIPASE C‐LIKE 1 as an extracellular protein essential for fumonisin B1 toxicity (2021)
Journal Article
Smith, S. J., Goodman, H., Kroon, J. T., Brown, A. P., Simon, W. J., & Chivasa, S. (2021). Isolation of Arabidopsis extracellular ATP‐binding proteins by affinity proteomics and identification of PHOSPHOLIPASE C‐LIKE 1 as an extracellular protein essential for fumonisin B1 toxicity. The Plant Journal, 106(5), 1387-1400. https://doi.org/10.1111/tpj.15243

ATP is secreted to the extracellular matrix where it activates plasma membrane receptors for controlling plant growth and stress‐adaptive processes. DOES NOT RESPOND TO NUCLEOTIDES 1 (DORN1), the first plant ATP receptor was identified, but key downs... Read More about Isolation of Arabidopsis extracellular ATP‐binding proteins by affinity proteomics and identification of PHOSPHOLIPASE C‐LIKE 1 as an extracellular protein essential for fumonisin B1 toxicity.

Heat Stress Triggers Differential Protein Accumulation in the Extracellular Matrix of Sorghum Cell Suspension Cultures (2020)
Journal Article
Ngcala, M. G., Goche, T., Brown, A. P., Chivasa, S., & Ngara, R. (2020). Heat Stress Triggers Differential Protein Accumulation in the Extracellular Matrix of Sorghum Cell Suspension Cultures. Proteomes, 8(4), Article 29. https://doi.org/10.3390/proteomes8040029

Plants reprogram gene expression as an adaptive response to survive high temperatures. While the identity and functions of intracellular heat stress-responsive proteins have been extensively studied, the heat response of proteins secreted to the extr... Read More about Heat Stress Triggers Differential Protein Accumulation in the Extracellular Matrix of Sorghum Cell Suspension Cultures.

Comparative physiological and root proteome analyses of two sorghum varieties responding to water limitation (2020)
Journal Article
Goche, T., Shargie, N. G., Cummins, I., Brown, A. P., Chivasa, S., & Ngara, R. (2020). Comparative physiological and root proteome analyses of two sorghum varieties responding to water limitation. Scientific Reports, 10(1), Article 11835. https://doi.org/10.1038/s41598-020-68735-3

When exposed to drought stress many plants reprogram their gene expression to activate adaptive biochemical and physiological responses for survival. However, most of the well-studied adaptive responses are common between drought-sensitive and drough... Read More about Comparative physiological and root proteome analyses of two sorghum varieties responding to water limitation.

Stress‐adaptive gene discovery by exploiting collective decision‐making of decentralised plant response systems (2019)
Journal Article
Chivasa, S., & Goodman, H. L. (2020). Stress‐adaptive gene discovery by exploiting collective decision‐making of decentralised plant response systems. New Phytologist, 225(6), 2307-2313. https://doi.org/10.1111/nph.16273

Despite having a network of cytoplasmic interconnections (plasmodesmata) facilitating rapid exchange of metabolites and signal molecules, plant cells use the extracellular matrix as an alternative route for cell‐cell communication. The need for extra... Read More about Stress‐adaptive gene discovery by exploiting collective decision‐making of decentralised plant response systems.

Bioenergy Production Using Trichormus variabilis - A review (2019)
Journal Article
Abedi, S., Astaraei, F. R., Ghobadian, B., Tavakoli, O., Jalili, H., Chivasa, S., & Chris, G. H. (2019). Bioenergy Production Using Trichormus variabilis - A review. Biofuels, Bioproducts and Biorefining, 13(5), 1365-1382. https://doi.org/10.1002/bbb.2023

Fossil‐fuel processing and consumption contaminates air, soil, and water resources through the release of hazardous chemicals. The harnessing of renewable energy resources and development of sustainable technologies have become prime targets of resea... Read More about Bioenergy Production Using Trichormus variabilis - A review.

Establishment and Characterization of Callus and Cell Suspension Cultures of Selected Sorghum bicolor (L.) Moench Varieties: A Resource for Gene Discovery in Plant Stress Biology (2019)
Journal Article
Ramulifho, E., Goche, T., Van As, J., Tsilo, T. J., Chivasa, S., & Ngara, R. (2019). Establishment and Characterization of Callus and Cell Suspension Cultures of Selected Sorghum bicolor (L.) Moench Varieties: A Resource for Gene Discovery in Plant Stress Biology. Agronomy, 9(5), Article 218. https://doi.org/10.3390/agronomy9050218

Sorghum, a naturally drought tolerant crop, is genetically diverse and provides a wide gene pool for exploitation in crop breeding. In this study, we experimentally assessed friable callus induction rates of seven sorghum varieties using shoot explan... Read More about Establishment and Characterization of Callus and Cell Suspension Cultures of Selected Sorghum bicolor (L.) Moench Varieties: A Resource for Gene Discovery in Plant Stress Biology.

Decoupling a novel Trichormus variabilis-Synechocystis sp. interaction to boost phycoremediation (2019)
Journal Article
Abedi, S., Astaraei, F. R., Ghobadian, B., Tavakoli, O., Jalili, H., Greenwell, H. C., …Chivasa, S. (2019). Decoupling a novel Trichormus variabilis-Synechocystis sp. interaction to boost phycoremediation. Scientific Reports, 9, Article 2511. https://doi.org/10.1038/s41598-019-38997-7

To conserve freshwater resources, domestic and industrial wastewater is recycled. Algal systems have emerged as an efficient, low-cost option for treatment (phycoremediation) of nutrient-rich wastewater and environmental protection. However, industri... Read More about Decoupling a novel Trichormus variabilis-Synechocystis sp. interaction to boost phycoremediation.

Identifying differentially expressed proteins in sorghum cell cultures exposed to osmotic stress (2018)
Journal Article
Ngara, R., Ramulifho, E., Movahedi, M., Shargie, N. G., Brown, A. P., & Chivasa, S. (2018). Identifying differentially expressed proteins in sorghum cell cultures exposed to osmotic stress. Scientific Reports, 8(1), Article 8671. https://doi.org/10.1038/s41598-018-27003-1

Drought stress triggers remarkable physiological changes and growth impediments, which significantly diminish plant biomass and crop yield. However, certain plant species show notable resilience, maintaining nearly normal yields under severe water de... Read More about Identifying differentially expressed proteins in sorghum cell cultures exposed to osmotic stress.

Comparative proteomic analysis of horseweed (Conyza canadensis) biotypes identifies candidate proteins for glyphosate resistance (2017)
Journal Article
González-Torralva, F., Brown, A., & Chivasa, S. (2017). Comparative proteomic analysis of horseweed (Conyza canadensis) biotypes identifies candidate proteins for glyphosate resistance. Scientific Reports, 7, https://doi.org/10.1038/srep42565

Emergence of glyphosate-resistant horseweed (Conyza canadensis) biotypes is an example of how unrelenting use of a single mode of action herbicide in agricultural weed control drives genetic adaptation in targeted species. While in other weeds glypho... Read More about Comparative proteomic analysis of horseweed (Conyza canadensis) biotypes identifies candidate proteins for glyphosate resistance.

A Novel Function for Arabidopsis CYCLASE1 in Programmed Cell Death Revealed by Isobaric Tags for Relative and Absolute Quantitation (iTRAQ) Analysis of Extracellular Matrix Proteins (2015)
Journal Article
Smith, S. J., Kroon, J. T., Simon, W. J., Slabas, A. R., & Chivasa, S. (2015). A Novel Function for Arabidopsis CYCLASE1 in Programmed Cell Death Revealed by Isobaric Tags for Relative and Absolute Quantitation (iTRAQ) Analysis of Extracellular Matrix Proteins. Molecular and Cellular Proteomics, 14(6), 1556-1568. https://doi.org/10.1074/mcp.m114.045054

Programmed cell death is essential for plant development and stress adaptation. A detailed understanding of the signal transduction pathways that regulate plant programmed cell death requires identification of the underpinning protein networks. Here,... Read More about A Novel Function for Arabidopsis CYCLASE1 in Programmed Cell Death Revealed by Isobaric Tags for Relative and Absolute Quantitation (iTRAQ) Analysis of Extracellular Matrix Proteins.