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Carl-Otto Ottosen

Effect of temperature on plant growth and stress tolerant traits in rooibos in the Western Cape, South Africa

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Effect of temperature on plant growth and stress tolerant traits in rooibos in the Western Cape, South Africa. / MacAlister, Dunja; Muthama Muasya, A.; Crespo, Olivier; Ogola, John B.O.; Maseko, Sipho; Valentine, Alex J.; Ottosen, Carl-Otto; Rosenqvist, Eva; Chimphango, Samson B.M.

I: Scientia Horticulturae, Bind 263, 109137, 2020.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Harvard

MacAlister, D, Muthama Muasya, A, Crespo, O, Ogola, JBO, Maseko, S, Valentine, AJ, Ottosen, C-O, Rosenqvist, E & Chimphango, SBM 2020, 'Effect of temperature on plant growth and stress tolerant traits in rooibos in the Western Cape, South Africa', Scientia Horticulturae, bind 263, 109137. https://doi.org/10.1016/j.scienta.2019.109137

APA

MacAlister, D., Muthama Muasya, A., Crespo, O., Ogola, J. B. O., Maseko, S., Valentine, A. J., Ottosen, C-O., Rosenqvist, E., & Chimphango, S. B. M. (2020). Effect of temperature on plant growth and stress tolerant traits in rooibos in the Western Cape, South Africa. Scientia Horticulturae, 263, [109137]. https://doi.org/10.1016/j.scienta.2019.109137

CBE

MacAlister D, Muthama Muasya A, Crespo O, Ogola JBO, Maseko S, Valentine AJ, Ottosen C-O, Rosenqvist E, Chimphango SBM. 2020. Effect of temperature on plant growth and stress tolerant traits in rooibos in the Western Cape, South Africa. Scientia Horticulturae. 263:Article 109137. https://doi.org/10.1016/j.scienta.2019.109137

MLA

Vancouver

MacAlister D, Muthama Muasya A, Crespo O, Ogola JBO, Maseko S, Valentine AJ o.a. Effect of temperature on plant growth and stress tolerant traits in rooibos in the Western Cape, South Africa. Scientia Horticulturae. 2020;263. 109137. https://doi.org/10.1016/j.scienta.2019.109137

Author

MacAlister, Dunja ; Muthama Muasya, A. ; Crespo, Olivier ; Ogola, John B.O. ; Maseko, Sipho ; Valentine, Alex J. ; Ottosen, Carl-Otto ; Rosenqvist, Eva ; Chimphango, Samson B.M. / Effect of temperature on plant growth and stress tolerant traits in rooibos in the Western Cape, South Africa. I: Scientia Horticulturae. 2020 ; Bind 263.

Bibtex

@article{6e97864687fa46d2b42f27bf97f3cefb,
title = "Effect of temperature on plant growth and stress tolerant traits in rooibos in the Western Cape, South Africa",
abstract = "Mediterranean systems, such as in South Africa, are particularly vulnerable to the predicted increases in mean surface temperatures which will likely affect the growth and physiology of many plants and subsequently affect agricultural productivity. Aspalathus linearis (Burm.f.) R. Dahlgren (rooibos) is an important commercial, endemic crop that is produced in the Cederberg region, South Africa. This region experiences a Mediterranean-type ecosystem that is characterised by hot, dry summers (November – February) and cool, wet winters (May – August). This study assessed the effects of temperature on the growth and stress tolerant traits of A. linearis over two years. Crop biomass and selected physiological traits were determined in the field, along a temperature gradient, at four farm sites in the Cederberg during the summer and winter 2017 and summer 2018. Aspalathus linearis plants showed evidence of transpirational leaf cooling during summer and this, combined with lower chlorophyll and high phenolic content, could be considered acclimatized adaptive changes allowing the plants to mitigate the heating effects of elevated temperatures. Although changes in soil nutrients and increasing temperatures had a negative impact on crop biomass, the phenolic content, a measure of tea quality, did not vary with sites. This suggests that a shift in rooibos farming to cooler and wetter areas further south, for better growth and higher yields, would not compromise the quality of rooibos tea.",
keywords = "Aspalathus linearis, Climate change, Leaf cooling, Thermotolerance",
author = "Dunja MacAlister and {Muthama Muasya}, A. and Olivier Crespo and Ogola, {John B.O.} and Sipho Maseko and Valentine, {Alex J.} and Carl-Otto Ottosen and Eva Rosenqvist and Chimphango, {Samson B.M.}",
year = "2020",
doi = "10.1016/j.scienta.2019.109137",
language = "English",
volume = "263",
journal = "Scientia Horticulturae",
issn = "0304-4238",
publisher = "Elsevier BV",

}

RIS

TY - JOUR

T1 - Effect of temperature on plant growth and stress tolerant traits in rooibos in the Western Cape, South Africa

AU - MacAlister, Dunja

AU - Muthama Muasya, A.

AU - Crespo, Olivier

AU - Ogola, John B.O.

AU - Maseko, Sipho

AU - Valentine, Alex J.

AU - Ottosen, Carl-Otto

AU - Rosenqvist, Eva

AU - Chimphango, Samson B.M.

PY - 2020

Y1 - 2020

N2 - Mediterranean systems, such as in South Africa, are particularly vulnerable to the predicted increases in mean surface temperatures which will likely affect the growth and physiology of many plants and subsequently affect agricultural productivity. Aspalathus linearis (Burm.f.) R. Dahlgren (rooibos) is an important commercial, endemic crop that is produced in the Cederberg region, South Africa. This region experiences a Mediterranean-type ecosystem that is characterised by hot, dry summers (November – February) and cool, wet winters (May – August). This study assessed the effects of temperature on the growth and stress tolerant traits of A. linearis over two years. Crop biomass and selected physiological traits were determined in the field, along a temperature gradient, at four farm sites in the Cederberg during the summer and winter 2017 and summer 2018. Aspalathus linearis plants showed evidence of transpirational leaf cooling during summer and this, combined with lower chlorophyll and high phenolic content, could be considered acclimatized adaptive changes allowing the plants to mitigate the heating effects of elevated temperatures. Although changes in soil nutrients and increasing temperatures had a negative impact on crop biomass, the phenolic content, a measure of tea quality, did not vary with sites. This suggests that a shift in rooibos farming to cooler and wetter areas further south, for better growth and higher yields, would not compromise the quality of rooibos tea.

AB - Mediterranean systems, such as in South Africa, are particularly vulnerable to the predicted increases in mean surface temperatures which will likely affect the growth and physiology of many plants and subsequently affect agricultural productivity. Aspalathus linearis (Burm.f.) R. Dahlgren (rooibos) is an important commercial, endemic crop that is produced in the Cederberg region, South Africa. This region experiences a Mediterranean-type ecosystem that is characterised by hot, dry summers (November – February) and cool, wet winters (May – August). This study assessed the effects of temperature on the growth and stress tolerant traits of A. linearis over two years. Crop biomass and selected physiological traits were determined in the field, along a temperature gradient, at four farm sites in the Cederberg during the summer and winter 2017 and summer 2018. Aspalathus linearis plants showed evidence of transpirational leaf cooling during summer and this, combined with lower chlorophyll and high phenolic content, could be considered acclimatized adaptive changes allowing the plants to mitigate the heating effects of elevated temperatures. Although changes in soil nutrients and increasing temperatures had a negative impact on crop biomass, the phenolic content, a measure of tea quality, did not vary with sites. This suggests that a shift in rooibos farming to cooler and wetter areas further south, for better growth and higher yields, would not compromise the quality of rooibos tea.

KW - Aspalathus linearis

KW - Climate change

KW - Leaf cooling

KW - Thermotolerance

UR - http://www.scopus.com/inward/record.url?scp=85076508501&partnerID=8YFLogxK

U2 - 10.1016/j.scienta.2019.109137

DO - 10.1016/j.scienta.2019.109137

M3 - Journal article

VL - 263

JO - Scientia Horticulturae

JF - Scientia Horticulturae

SN - 0304-4238

M1 - 109137

ER -