Details
| Original language | English |
|---|---|
| Pages (from-to) | 1572-1575 |
| Number of pages | 4 |
| Journal | HORTSCIENCE |
| Volume | 57 |
| Issue number | 12 |
| Early online date | 23 Nov 2022 |
| Publication status | Published - 1 Dec 2022 |
Abstract
Neck shrivel is a fruit disorder of european plum (Prunus domestica L.). We investigate whether an asymmetrical distribution of osmolytes might explain the observations of a turgid stylar end and a flaccid stem end, in a selection of 17 plum cultivars sourced from two sites. The osmotic potential (ΨP) of the juices expressed from stem or stylar end fruit samples decreased (became more negative) during development. The cell turgor (ΨP) slightly increased during development up to 352 ± 42 kPa at 78 days after full bloom (DAFB) in the stem end and up to 331 ± 51 kPa at 92 DAFB in the stylar end, and then decreased. At maturity, ΨP averaged 22 ± 3 kPa in the stem end and 22 ± 4 kPa in the stylar end. These values are negligibly low compared with the very negative values of ΨP in the stylar end (23188 ± 73 kPa) and stem end (23060 ± 74 kPa). There was a transient gradient in ΨP between stylar end and stem end that almost disappeared by maturity. Marked differences in ΨP and its distribution were measured across 17 cultivars. In the majority (14), ΨP was more negative at the stylar end than at the stem end. A more negative ΨP in the stem was only detected in ‘Aprimira’, ‘Topfive’, and ‘Tophit’. Our results demonstrate that cell ΨP is very low and is essentially independent of ΨP in developing european plums. In most cultivars, ΨP in the stylar end is more negative than in the stem end. The absence of an axial gradient in ΨP and the small differences in ΨP between the stem and stylar end make both factors unlikely candidates for explaining neck shrivel.
Keywords
- osmotic potential, Prunus domestica, turgor, water potential
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
- Horticulture
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In: HORTSCIENCE, Vol. 57, No. 12, 01.12.2022, p. 1572-1575.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Water Potential, Osmotic Potential, and Cell Turgor in Developing European Plums
AU - Knoche, Moritz
AU - Grimm, Eckhard
N1 - Funding Information: Received for publication 15 Sep 2022. Accepted for publication 14 Oct 2022. Published online 23 Nov 2022. This research was funded in part by grant KN 402/20-1 from the Deutsche Forschungsgemein-schaft. The publication of this article was funded by the Open Access fund of the Leibniz Uni-versit€at Hannover. We thank Mrs. Anne Grund, Mr. Andreas Zscham-mer, and Dr. Erik Schulte of the Federal Plant Variety Office for the fruit samples; Mr. Rajesh Mehta and Mr. Simon Sitzenstock for technical help; and Drs. Andreas Winkler and Sandy Lang for helpful comments on an earlier version of this manuscript. M.K. is the corresponding author. E-mail: moritz. knoche@obst.uni-hannover.de. This is an open access article distributed under the CC BY-NC-ND license (https://creativecommons. org/licenses/by-nc-nd/4.0/).
PY - 2022/12/1
Y1 - 2022/12/1
N2 - Neck shrivel is a fruit disorder of european plum (Prunus domestica L.). We investigate whether an asymmetrical distribution of osmolytes might explain the observations of a turgid stylar end and a flaccid stem end, in a selection of 17 plum cultivars sourced from two sites. The osmotic potential (ΨP) of the juices expressed from stem or stylar end fruit samples decreased (became more negative) during development. The cell turgor (ΨP) slightly increased during development up to 352 ± 42 kPa at 78 days after full bloom (DAFB) in the stem end and up to 331 ± 51 kPa at 92 DAFB in the stylar end, and then decreased. At maturity, ΨP averaged 22 ± 3 kPa in the stem end and 22 ± 4 kPa in the stylar end. These values are negligibly low compared with the very negative values of ΨP in the stylar end (23188 ± 73 kPa) and stem end (23060 ± 74 kPa). There was a transient gradient in ΨP between stylar end and stem end that almost disappeared by maturity. Marked differences in ΨP and its distribution were measured across 17 cultivars. In the majority (14), ΨP was more negative at the stylar end than at the stem end. A more negative ΨP in the stem was only detected in ‘Aprimira’, ‘Topfive’, and ‘Tophit’. Our results demonstrate that cell ΨP is very low and is essentially independent of ΨP in developing european plums. In most cultivars, ΨP in the stylar end is more negative than in the stem end. The absence of an axial gradient in ΨP and the small differences in ΨP between the stem and stylar end make both factors unlikely candidates for explaining neck shrivel.
AB - Neck shrivel is a fruit disorder of european plum (Prunus domestica L.). We investigate whether an asymmetrical distribution of osmolytes might explain the observations of a turgid stylar end and a flaccid stem end, in a selection of 17 plum cultivars sourced from two sites. The osmotic potential (ΨP) of the juices expressed from stem or stylar end fruit samples decreased (became more negative) during development. The cell turgor (ΨP) slightly increased during development up to 352 ± 42 kPa at 78 days after full bloom (DAFB) in the stem end and up to 331 ± 51 kPa at 92 DAFB in the stylar end, and then decreased. At maturity, ΨP averaged 22 ± 3 kPa in the stem end and 22 ± 4 kPa in the stylar end. These values are negligibly low compared with the very negative values of ΨP in the stylar end (23188 ± 73 kPa) and stem end (23060 ± 74 kPa). There was a transient gradient in ΨP between stylar end and stem end that almost disappeared by maturity. Marked differences in ΨP and its distribution were measured across 17 cultivars. In the majority (14), ΨP was more negative at the stylar end than at the stem end. A more negative ΨP in the stem was only detected in ‘Aprimira’, ‘Topfive’, and ‘Tophit’. Our results demonstrate that cell ΨP is very low and is essentially independent of ΨP in developing european plums. In most cultivars, ΨP in the stylar end is more negative than in the stem end. The absence of an axial gradient in ΨP and the small differences in ΨP between the stem and stylar end make both factors unlikely candidates for explaining neck shrivel.
KW - osmotic potential
KW - Prunus domestica
KW - turgor
KW - water potential
UR - http://www.scopus.com/inward/record.url?scp=85148347240&partnerID=8YFLogxK
U2 - 10.21273/HORTSCI16883-22
DO - 10.21273/HORTSCI16883-22
M3 - Article
AN - SCOPUS:85148347240
VL - 57
SP - 1572
EP - 1575
JO - HORTSCIENCE
JF - HORTSCIENCE
SN - 0018-5345
IS - 12
ER -