Hormonal Regulation in Different Varieties of <i>Chenopodium quinoa</i> Willd. Exposed to Short Acute UV-B Irradiation
Increased ultraviolet-B (UV-B) due to global change can affect plant development and metabolism. Quinoa tolerates extreme conditions including high UV levels. However, the physiological mechanisms behind its abiotic stress tolerance are unclear, especially those related to UV-B. We previously demons...
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doaj-12c7ff1847894bd6b8c64eb179d611f92021-04-23T23:06:33ZengMDPI AGPlants2223-77472021-04-011085885810.3390/plants10050858Hormonal Regulation in Different Varieties of <i>Chenopodium quinoa</i> Willd. Exposed to Short Acute UV-B IrradiationLorenzo Mariotti0Thais Huarancca Reyes1Jose Martin Ramos-Diaz2Kirsi Jouppila3Lorenzo Guglielminetti4Department of Agriculture, Food and Environment, University of Pisa, via Mariscoglio 34, I-56124 Pisa, ItalyDepartment of Agriculture, Food and Environment, University of Pisa, via Mariscoglio 34, I-56124 Pisa, ItalyDepartment of Food and Nutrition, University of Helsinki, Agnes Sjöbergin katu 2, FI-00014 Helsinki, FinlandDepartment of Food and Nutrition, University of Helsinki, Agnes Sjöbergin katu 2, FI-00014 Helsinki, FinlandDepartment of Agriculture, Food and Environment, University of Pisa, via Mariscoglio 34, I-56124 Pisa, ItalyIncreased ultraviolet-B (UV-B) due to global change can affect plant development and metabolism. Quinoa tolerates extreme conditions including high UV levels. However, the physiological mechanisms behind its abiotic stress tolerance are unclear, especially those related to UV-B. We previously demonstrated that 9.12 kJ m<sup>−2</sup> d<sup>−1</sup> may induce UV-B-specific signaling while 18.24 kJ m<sup>−2</sup> d<sup>−1</sup> promotes a UV-B-independent response. Here, we explored the effects of these UV-B doses on hormonal regulation linked to plant morphology and defense among diverse varieties. Changes in fluorescence parameters of photosystem II, flavonoids and hormones (indoleacetic acid (IAA), jasmonic acid (JA), abscisic acid (ABA) and salicylic acid (SA)) were surveyed under controlled conditions. Here, we showed that the sensitivity to short acute UV-B doses in varieties from different habitats is influenced by their parental lines and breeding time. UV-B sensitivity does not necessarily correlate with quinoa’s geographical distribution. The role of flavonoids in the UV-B response seems to be different depending on varieties. Moreover, we found that the extent of changes in JA and SA correlate with UV-B tolerance, while the increase of ABA was mainly related to UV-B stress.https://www.mdpi.com/2223-7747/10/5/858indoleacetic acidabscisic acidchlorophyll fluorescenceflavonoidsjasmonic acidsalicylic acid |
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DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Lorenzo Mariotti Thais Huarancca Reyes Jose Martin Ramos-Diaz Kirsi Jouppila Lorenzo Guglielminetti |
spellingShingle |
Lorenzo Mariotti Thais Huarancca Reyes Jose Martin Ramos-Diaz Kirsi Jouppila Lorenzo Guglielminetti Hormonal Regulation in Different Varieties of <i>Chenopodium quinoa</i> Willd. Exposed to Short Acute UV-B Irradiation Plants indoleacetic acid abscisic acid chlorophyll fluorescence flavonoids jasmonic acid salicylic acid |
author_facet |
Lorenzo Mariotti Thais Huarancca Reyes Jose Martin Ramos-Diaz Kirsi Jouppila Lorenzo Guglielminetti |
author_sort |
Lorenzo Mariotti |
title |
Hormonal Regulation in Different Varieties of <i>Chenopodium quinoa</i> Willd. Exposed to Short Acute UV-B Irradiation |
title_short |
Hormonal Regulation in Different Varieties of <i>Chenopodium quinoa</i> Willd. Exposed to Short Acute UV-B Irradiation |
title_full |
Hormonal Regulation in Different Varieties of <i>Chenopodium quinoa</i> Willd. Exposed to Short Acute UV-B Irradiation |
title_fullStr |
Hormonal Regulation in Different Varieties of <i>Chenopodium quinoa</i> Willd. Exposed to Short Acute UV-B Irradiation |
title_full_unstemmed |
Hormonal Regulation in Different Varieties of <i>Chenopodium quinoa</i> Willd. Exposed to Short Acute UV-B Irradiation |
title_sort |
hormonal regulation in different varieties of <i>chenopodium quinoa</i> willd. exposed to short acute uv-b irradiation |
publisher |
MDPI AG |
series |
Plants |
issn |
2223-7747 |
publishDate |
2021-04-01 |
description |
Increased ultraviolet-B (UV-B) due to global change can affect plant development and metabolism. Quinoa tolerates extreme conditions including high UV levels. However, the physiological mechanisms behind its abiotic stress tolerance are unclear, especially those related to UV-B. We previously demonstrated that 9.12 kJ m<sup>−2</sup> d<sup>−1</sup> may induce UV-B-specific signaling while 18.24 kJ m<sup>−2</sup> d<sup>−1</sup> promotes a UV-B-independent response. Here, we explored the effects of these UV-B doses on hormonal regulation linked to plant morphology and defense among diverse varieties. Changes in fluorescence parameters of photosystem II, flavonoids and hormones (indoleacetic acid (IAA), jasmonic acid (JA), abscisic acid (ABA) and salicylic acid (SA)) were surveyed under controlled conditions. Here, we showed that the sensitivity to short acute UV-B doses in varieties from different habitats is influenced by their parental lines and breeding time. UV-B sensitivity does not necessarily correlate with quinoa’s geographical distribution. The role of flavonoids in the UV-B response seems to be different depending on varieties. Moreover, we found that the extent of changes in JA and SA correlate with UV-B tolerance, while the increase of ABA was mainly related to UV-B stress. |
topic |
indoleacetic acid abscisic acid chlorophyll fluorescence flavonoids jasmonic acid salicylic acid |
url |
https://www.mdpi.com/2223-7747/10/5/858 |
work_keys_str_mv |
AT lorenzomariotti hormonalregulationindifferentvarietiesofichenopodiumquinoaiwilldexposedtoshortacuteuvbirradiation AT thaishuaranccareyes hormonalregulationindifferentvarietiesofichenopodiumquinoaiwilldexposedtoshortacuteuvbirradiation AT josemartinramosdiaz hormonalregulationindifferentvarietiesofichenopodiumquinoaiwilldexposedtoshortacuteuvbirradiation AT kirsijouppila hormonalregulationindifferentvarietiesofichenopodiumquinoaiwilldexposedtoshortacuteuvbirradiation AT lorenzoguglielminetti hormonalregulationindifferentvarietiesofichenopodiumquinoaiwilldexposedtoshortacuteuvbirradiation |
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1721512014520516608 |