Photons from NIR LEDs can delay flowering in short-day soybean and Cannabis: Implications for phytochrome activity.

Photons during the dark period delay flowering in short-day plants (SDP). Red photons applied at night convert phytochromes to the active far-red absorbing form (Pfr), leading to inhibition of flowering. Far-red photons (greater than 700 nm) re-induce flowering when applied after a pulse of red phot...

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Autores principales:	Paul Kusuma, F Mitchell Westmoreland, Shuyang Zhen, Bruce Bugbee
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6c0140fe4d0b43fda4e142fe71e23a94
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spelling	oai:doaj.org-article:6c0140fe4d0b43fda4e142fe71e23a942021-12-02T20:06:23ZPhotons from NIR LEDs can delay flowering in short-day soybean and Cannabis: Implications for phytochrome activity.1932-620310.1371/journal.pone.0255232https://doaj.org/article/6c0140fe4d0b43fda4e142fe71e23a942021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0255232https://doaj.org/toc/1932-6203Photons during the dark period delay flowering in short-day plants (SDP). Red photons applied at night convert phytochromes to the active far-red absorbing form (Pfr), leading to inhibition of flowering. Far-red photons (greater than 700 nm) re-induce flowering when applied after a pulse of red photons during the dark period. However, far-red photons at sufficiently high intensity and duration delay flowering in sensitive species. Mechanistically, this response occurs because phytochrome-red (Pr) absorbance is not zero beyond 700 nm. We applied nighttime photons from near infrared (NIR) LEDs (peak 850 nm) over a 12 h dark period. Flowering was delayed in Glycine max and Cannabis sativa (two photosensitive species) by 3 and 12 days, respectively, as the flux of photons from NIR LEDs was increased up to 83 and 116 μmol m-2 s-1. This suggests that long wavelength photons from NIR LEDs can activate phytochromes (convert Pr to Pfr) and thus alter plant development.Paul KusumaF Mitchell WestmorelandShuyang ZhenBruce BugbeePublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 7, p e0255232 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Paul Kusuma F Mitchell Westmoreland Shuyang Zhen Bruce Bugbee Photons from NIR LEDs can delay flowering in short-day soybean and Cannabis: Implications for phytochrome activity.
description	Photons during the dark period delay flowering in short-day plants (SDP). Red photons applied at night convert phytochromes to the active far-red absorbing form (Pfr), leading to inhibition of flowering. Far-red photons (greater than 700 nm) re-induce flowering when applied after a pulse of red photons during the dark period. However, far-red photons at sufficiently high intensity and duration delay flowering in sensitive species. Mechanistically, this response occurs because phytochrome-red (Pr) absorbance is not zero beyond 700 nm. We applied nighttime photons from near infrared (NIR) LEDs (peak 850 nm) over a 12 h dark period. Flowering was delayed in Glycine max and Cannabis sativa (two photosensitive species) by 3 and 12 days, respectively, as the flux of photons from NIR LEDs was increased up to 83 and 116 μmol m-2 s-1. This suggests that long wavelength photons from NIR LEDs can activate phytochromes (convert Pr to Pfr) and thus alter plant development.
format	article
author	Paul Kusuma F Mitchell Westmoreland Shuyang Zhen Bruce Bugbee
author_facet	Paul Kusuma F Mitchell Westmoreland Shuyang Zhen Bruce Bugbee
author_sort	Paul Kusuma
title	Photons from NIR LEDs can delay flowering in short-day soybean and Cannabis: Implications for phytochrome activity.
title_short	Photons from NIR LEDs can delay flowering in short-day soybean and Cannabis: Implications for phytochrome activity.
title_full	Photons from NIR LEDs can delay flowering in short-day soybean and Cannabis: Implications for phytochrome activity.
title_fullStr	Photons from NIR LEDs can delay flowering in short-day soybean and Cannabis: Implications for phytochrome activity.
title_full_unstemmed	Photons from NIR LEDs can delay flowering in short-day soybean and Cannabis: Implications for phytochrome activity.
title_sort	photons from nir leds can delay flowering in short-day soybean and cannabis: implications for phytochrome activity.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/6c0140fe4d0b43fda4e142fe71e23a94
work_keys_str_mv	AT paulkusuma photonsfromnirledscandelayfloweringinshortdaysoybeanandcannabisimplicationsforphytochromeactivity AT fmitchellwestmoreland photonsfromnirledscandelayfloweringinshortdaysoybeanandcannabisimplicationsforphytochromeactivity AT shuyangzhen photonsfromnirledscandelayfloweringinshortdaysoybeanandcannabisimplicationsforphytochromeactivity AT brucebugbee photonsfromnirledscandelayfloweringinshortdaysoybeanandcannabisimplicationsforphytochromeactivity
_version_	1718375364840914944

Photons from NIR LEDs can delay flowering in short-day soybean and Cannabis: Implications for phytochrome activity.

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