Is There More to Within-plant Variation in Seed Size than Developmental Noise?
(2021) In Evolutionary Biology 48(3). p.366-377- Abstract
Within-plant variation in seed size may merely reflect developmental instability, or it may be adaptive in facilitating diversifying bet-hedging, that is, production of phenotypically diverse offspring when future environments are unpredictable. To test the latter hypothesis, we analyzed patterns of variation in seed size in 11 populations of the perennial vine Dalechampia scandens grown in a common greenhouse environment. We tested whether population differences in the mean and variation of seed size covaried with environmental predictability at two different timescales. We also tested whether within-plant variation in seed size was correlated with independent measures of floral developmental instability and increased under stressful... (More)
Within-plant variation in seed size may merely reflect developmental instability, or it may be adaptive in facilitating diversifying bet-hedging, that is, production of phenotypically diverse offspring when future environments are unpredictable. To test the latter hypothesis, we analyzed patterns of variation in seed size in 11 populations of the perennial vine Dalechampia scandens grown in a common greenhouse environment. We tested whether population differences in the mean and variation of seed size covaried with environmental predictability at two different timescales. We also tested whether within-plant variation in seed size was correlated with independent measures of floral developmental instability and increased under stressful conditions. Populations differed genetically in the amount of seed-size variation occurring among plants, among infructescences within plants, and among seeds within infructescences. Within-individual variation was not detectably correlated with measures of developmental instability and did not increase under stress, but it increased weakly with short-term environmental unpredictability of precipitation at the source-population site. These results support the hypothesis that greater variation in seed size is adaptive when environmental predictability is low.
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- author
- Pélabon, Christophe ; De Giorgi, Francesca ; Opedal, Øystein H. LU ; Bolstad, Geir H. ; Raunsgard, Astrid and Scott Armbruster, W.
- organization
- publishing date
- 2021-07-08
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Bet-hedging, Canalization, Development, Developmental stability, Dormancy, Fluctuating asymmetry, Seed mass, Seed maturation
- in
- Evolutionary Biology
- volume
- 48
- issue
- 3
- pages
- 366 - 377
- publisher
- Springer
- external identifiers
-
- scopus:85109599907
- ISSN
- 0071-3260
- DOI
- 10.1007/s11692-021-09544-y
- language
- English
- LU publication?
- yes
- additional info
- Funding Information: Open access funding provided by NTNU Norwegian University of Science and Technology (incl St. Olavs Hospital - Trondheim University Hospital). This work was partly supported by the Research Council of Norway through its Centre of Excellence funding scheme, project no. 223257 and NTNU. Publisher Copyright: © 2021, The Author(s). Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
- id
- 9dc05bef-5edd-4827-ba02-d236c778dfc8
- date added to LUP
- 2021-07-30 18:42:55
- date last changed
- 2024-05-04 09:49:38
@article{9dc05bef-5edd-4827-ba02-d236c778dfc8,
abstract = {{<p>Within-plant variation in seed size may merely reflect developmental instability, or it may be adaptive in facilitating diversifying bet-hedging, that is, production of phenotypically diverse offspring when future environments are unpredictable. To test the latter hypothesis, we analyzed patterns of variation in seed size in 11 populations of the perennial vine Dalechampia scandens grown in a common greenhouse environment. We tested whether population differences in the mean and variation of seed size covaried with environmental predictability at two different timescales. We also tested whether within-plant variation in seed size was correlated with independent measures of floral developmental instability and increased under stressful conditions. Populations differed genetically in the amount of seed-size variation occurring among plants, among infructescences within plants, and among seeds within infructescences. Within-individual variation was not detectably correlated with measures of developmental instability and did not increase under stress, but it increased weakly with short-term environmental unpredictability of precipitation at the source-population site. These results support the hypothesis that greater variation in seed size is adaptive when environmental predictability is low.</p>}},
author = {{Pélabon, Christophe and De Giorgi, Francesca and Opedal, Øystein H. and Bolstad, Geir H. and Raunsgard, Astrid and Scott Armbruster, W.}},
issn = {{0071-3260}},
keywords = {{Bet-hedging; Canalization; Development; Developmental stability; Dormancy; Fluctuating asymmetry; Seed mass; Seed maturation}},
language = {{eng}},
month = {{07}},
number = {{3}},
pages = {{366--377}},
publisher = {{Springer}},
series = {{Evolutionary Biology}},
title = {{Is There More to Within-plant Variation in Seed Size than Developmental Noise?}},
url = {{http://dx.doi.org/10.1007/s11692-021-09544-y}},
doi = {{10.1007/s11692-021-09544-y}},
volume = {{48}},
year = {{2021}},
}