Starch granule morphology in oat endosperm

Benedetta Saccomanno, Alan Chambers, Alec Hayes, IM Mackay, Simon McWilliams, Kay Trafford*

*Corresponding author for this work

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Mature and developing oat (Avena sativa) grains were sectioned and image analysis methods used to estimate the starch granule-size distribution and morphology in endosperm cells. This showed that oat endosperm cells contain two types of starch granule: compound starch granules such as those seen in rice endosperm and in most other grasses; and simple granules similar to the B-type starch granules seen in the endosperm of Triticeae species such as wheat (Triticum aestivum). The simple granules in oats are similar in size and relative abundance to B-type granules in Triticeae suggesting that they may share a common evolutionary origin. However, there is a fundamental difference between oats and Triticeae in the timing of granule initiation during grain development. In Triticeae, the B-type granules initiate several days after the A-type granules whereas in oats, both the simple and compound granule types initiate at the same time, in early grain development.
Original languageEnglish
Pages (from-to)46-54
JournalJournal of Cereal Science
Volume73
Early online date11 Nov 2016
DOIs
Publication statusPrint publication - 2017
Externally publishedYes

Fingerprint

Endosperm
starch granules
Starch
endosperm
oats
granules
Triticum
seed development
Image analysis
Poaceae
Avena sativa
Avena
Triticum aestivum
image analysis
cells
grasses
rice
wheat

Keywords

  • oats
  • starch granules
  • Seeds

Cite this

Saccomanno, B., Chambers, A., Hayes, A., Mackay, IM., McWilliams, S., & Trafford, K. (2017). Starch granule morphology in oat endosperm. Journal of Cereal Science, 73, 46-54. https://doi.org/10.1016/j.jcs.2016.10.011
Saccomanno, Benedetta ; Chambers, Alan ; Hayes, Alec ; Mackay, IM ; McWilliams, Simon ; Trafford, Kay. / Starch granule morphology in oat endosperm. In: Journal of Cereal Science. 2017 ; Vol. 73. pp. 46-54.
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abstract = "Mature and developing oat (Avena sativa) grains were sectioned and image analysis methods used to estimate the starch granule-size distribution and morphology in endosperm cells. This showed that oat endosperm cells contain two types of starch granule: compound starch granules such as those seen in rice endosperm and in most other grasses; and simple granules similar to the B-type starch granules seen in the endosperm of Triticeae species such as wheat (Triticum aestivum). The simple granules in oats are similar in size and relative abundance to B-type granules in Triticeae suggesting that they may share a common evolutionary origin. However, there is a fundamental difference between oats and Triticeae in the timing of granule initiation during grain development. In Triticeae, the B-type granules initiate several days after the A-type granules whereas in oats, both the simple and compound granule types initiate at the same time, in early grain development.",
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Saccomanno, B, Chambers, A, Hayes, A, Mackay, IM, McWilliams, S & Trafford, K 2017, 'Starch granule morphology in oat endosperm', Journal of Cereal Science, vol. 73, pp. 46-54. https://doi.org/10.1016/j.jcs.2016.10.011

Starch granule morphology in oat endosperm. / Saccomanno, Benedetta; Chambers, Alan; Hayes, Alec; Mackay, IM; McWilliams, Simon; Trafford, Kay.

In: Journal of Cereal Science, Vol. 73, 2017, p. 46-54.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Starch granule morphology in oat endosperm

AU - Saccomanno, Benedetta

AU - Chambers, Alan

AU - Hayes, Alec

AU - Mackay, IM

AU - McWilliams, Simon

AU - Trafford, Kay

PY - 2017

Y1 - 2017

N2 - Mature and developing oat (Avena sativa) grains were sectioned and image analysis methods used to estimate the starch granule-size distribution and morphology in endosperm cells. This showed that oat endosperm cells contain two types of starch granule: compound starch granules such as those seen in rice endosperm and in most other grasses; and simple granules similar to the B-type starch granules seen in the endosperm of Triticeae species such as wheat (Triticum aestivum). The simple granules in oats are similar in size and relative abundance to B-type granules in Triticeae suggesting that they may share a common evolutionary origin. However, there is a fundamental difference between oats and Triticeae in the timing of granule initiation during grain development. In Triticeae, the B-type granules initiate several days after the A-type granules whereas in oats, both the simple and compound granule types initiate at the same time, in early grain development.

AB - Mature and developing oat (Avena sativa) grains were sectioned and image analysis methods used to estimate the starch granule-size distribution and morphology in endosperm cells. This showed that oat endosperm cells contain two types of starch granule: compound starch granules such as those seen in rice endosperm and in most other grasses; and simple granules similar to the B-type starch granules seen in the endosperm of Triticeae species such as wheat (Triticum aestivum). The simple granules in oats are similar in size and relative abundance to B-type granules in Triticeae suggesting that they may share a common evolutionary origin. However, there is a fundamental difference between oats and Triticeae in the timing of granule initiation during grain development. In Triticeae, the B-type granules initiate several days after the A-type granules whereas in oats, both the simple and compound granule types initiate at the same time, in early grain development.

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KW - starch granules

KW - Seeds

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DO - 10.1016/j.jcs.2016.10.011

M3 - Article

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Saccomanno B, Chambers A, Hayes A, Mackay IM, McWilliams S, Trafford K. Starch granule morphology in oat endosperm. Journal of Cereal Science. 2017;73:46-54. https://doi.org/10.1016/j.jcs.2016.10.011