Diurnal Root Growth Dynamics in Mature Grapevines

Kare Mahmud, Jason Smith, Suzy Rogiers, Yann Guisard, Sharon Nielson, Bruno Holzapfel

Research output: Contribution to journalArticle

37 Downloads (Pure)

Abstract

Six-year-old Shiraz vines were grown under field-like conditions in 780 L soil filled plastic bins. One year after transplanting, root growth was monitored non-destructively using minirhizotron tubes. Images of the roots were collected at sunrise, midday, sunset and midnight over six consecutive days during flowering. It was found that the vines displayed a diurnal dynamic in root growth with a maximum in the afternoon and evening, and a minimum in the morning. While it was not possible to separate the effects of time of day and soil temperature a positive relationship between soil temperature and root elongation was observed. The diurnal dynamics of root growth was consistent with earlier observations in young potted vines, and is the first indication that mature vines also exhibit a pronounced diurnal dynamic of fine root growth. The possible influence of carbon supply and the role of the circadian clock in these diurnal growth dynamics are discussed.
Original languageEnglish
Pages (from-to)555-562
Number of pages8
JournalActa Horticulturae
Volume1205
DOIs
Publication statusPublished - 30 Jun 2018

Fingerprint

root growth
vines
soil temperature
transplanting (plants)
circadian rhythm
plastics
flowering
carbon
soil

Cite this

@article{2ed95db23ecc4d7faa941ed475c2ed7f,
title = "Diurnal Root Growth Dynamics in Mature Grapevines",
abstract = "Six-year-old Shiraz vines were grown under field-like conditions in 780 L soil filled plastic bins. One year after transplanting, root growth was monitored non-destructively using minirhizotron tubes. Images of the roots were collected at sunrise, midday, sunset and midnight over six consecutive days during flowering. It was found that the vines displayed a diurnal dynamic in root growth with a maximum in the afternoon and evening, and a minimum in the morning. While it was not possible to separate the effects of time of day and soil temperature a positive relationship between soil temperature and root elongation was observed. The diurnal dynamics of root growth was consistent with earlier observations in young potted vines, and is the first indication that mature vines also exhibit a pronounced diurnal dynamic of fine root growth. The possible influence of carbon supply and the role of the circadian clock in these diurnal growth dynamics are discussed.",
author = "Kare Mahmud and Jason Smith and Suzy Rogiers and Yann Guisard and Sharon Nielson and Bruno Holzapfel",
year = "2018",
month = "6",
day = "30",
doi = "10.17660/ActaHortic.2018.1205.70",
language = "English",
volume = "1205",
pages = "555--562",
journal = "Acta Horticulturae",
issn = "0567-7572",
publisher = "International Society for Horticultural Science",

}

Diurnal Root Growth Dynamics in Mature Grapevines. / Mahmud, Kare; Smith, Jason; Rogiers, Suzy; Guisard, Yann; Nielson, Sharon; Holzapfel, Bruno.

In: Acta Horticulturae, Vol. 1205, 30.06.2018, p. 555-562.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Diurnal Root Growth Dynamics in Mature Grapevines

AU - Mahmud, Kare

AU - Smith, Jason

AU - Rogiers, Suzy

AU - Guisard, Yann

AU - Nielson, Sharon

AU - Holzapfel, Bruno

PY - 2018/6/30

Y1 - 2018/6/30

N2 - Six-year-old Shiraz vines were grown under field-like conditions in 780 L soil filled plastic bins. One year after transplanting, root growth was monitored non-destructively using minirhizotron tubes. Images of the roots were collected at sunrise, midday, sunset and midnight over six consecutive days during flowering. It was found that the vines displayed a diurnal dynamic in root growth with a maximum in the afternoon and evening, and a minimum in the morning. While it was not possible to separate the effects of time of day and soil temperature a positive relationship between soil temperature and root elongation was observed. The diurnal dynamics of root growth was consistent with earlier observations in young potted vines, and is the first indication that mature vines also exhibit a pronounced diurnal dynamic of fine root growth. The possible influence of carbon supply and the role of the circadian clock in these diurnal growth dynamics are discussed.

AB - Six-year-old Shiraz vines were grown under field-like conditions in 780 L soil filled plastic bins. One year after transplanting, root growth was monitored non-destructively using minirhizotron tubes. Images of the roots were collected at sunrise, midday, sunset and midnight over six consecutive days during flowering. It was found that the vines displayed a diurnal dynamic in root growth with a maximum in the afternoon and evening, and a minimum in the morning. While it was not possible to separate the effects of time of day and soil temperature a positive relationship between soil temperature and root elongation was observed. The diurnal dynamics of root growth was consistent with earlier observations in young potted vines, and is the first indication that mature vines also exhibit a pronounced diurnal dynamic of fine root growth. The possible influence of carbon supply and the role of the circadian clock in these diurnal growth dynamics are discussed.

U2 - 10.17660/ActaHortic.2018.1205.70

DO - 10.17660/ActaHortic.2018.1205.70

M3 - Article

VL - 1205

SP - 555

EP - 562

JO - Acta Horticulturae

JF - Acta Horticulturae

SN - 0567-7572

ER -