Comparative transcriptome analyses reveal insights into catkin bloom patterns in pecan protogynous and protandrous cultivars
Copyright: This is an open access article, free of all copyright, and may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose. The work is made available under the Creative Commons CC0 public domain dedication..
In perennial plants such as pecan, once reproductive maturity is attained, there are genetic switches that are regulated and required for flower development year after year. Pecan trees are heterodichogamous with both pistillate and staminate flowers produced on the same tree. Therefore, defining genes exclusively responsible for pistillate inflorescence and staminate inflorescence (catkin) initiation is challenging at best. To understand these genetic switches and their timing, this study analyzed catkin bloom and gene expression of lateral buds collected from a protogynous (Wichita) and a protandrous (Western) pecan cultivar in summer, autumn and spring. Our data showed that pistillate flowers in the current season on the same shoot negatively impacted catkin production on the protogynous 'Wichita' cultivar. Whereas fruit production the previous year on 'Wichita' had a positive effect on catkin production on the same shoot the following year. However, fruiting the previous year nor current year pistillate flower production had no significant effect on catkin production on 'Western' (protandrous cultivar) cultivar. The RNA-Seq results present more significant differences between the fruiting and non-fruiting shoots of the 'Wichita' cultivar compared to the 'Western' cultivar, revealing the genetic signals likely responsible for catkin production. Our data presented here, indicates the genes showing expression for the initiation of both types of flowers the season before bloom.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:18 |
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| Enthalten in: |
PloS one - 18(2023), 2 vom: 08., Seite e0281805 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Rhein, Hormat Shadgou [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Completed 22.02.2023 Date Revised 09.04.2023 published: Electronic-eCollection Citation Status MEDLINE |
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| doi: |
10.1371/journal.pone.0281805 |
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| 520 | |a In perennial plants such as pecan, once reproductive maturity is attained, there are genetic switches that are regulated and required for flower development year after year. Pecan trees are heterodichogamous with both pistillate and staminate flowers produced on the same tree. Therefore, defining genes exclusively responsible for pistillate inflorescence and staminate inflorescence (catkin) initiation is challenging at best. To understand these genetic switches and their timing, this study analyzed catkin bloom and gene expression of lateral buds collected from a protogynous (Wichita) and a protandrous (Western) pecan cultivar in summer, autumn and spring. Our data showed that pistillate flowers in the current season on the same shoot negatively impacted catkin production on the protogynous 'Wichita' cultivar. Whereas fruit production the previous year on 'Wichita' had a positive effect on catkin production on the same shoot the following year. However, fruiting the previous year nor current year pistillate flower production had no significant effect on catkin production on 'Western' (protandrous cultivar) cultivar. The RNA-Seq results present more significant differences between the fruiting and non-fruiting shoots of the 'Wichita' cultivar compared to the 'Western' cultivar, revealing the genetic signals likely responsible for catkin production. Our data presented here, indicates the genes showing expression for the initiation of both types of flowers the season before bloom | ||
| 650 | 4 | |a Journal Article | |
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| 700 | 1 | |a Sreedasyam, Avinash |e verfasserin |4 aut | |
| 700 | 1 | |a Cooke, Peter |e verfasserin |4 aut | |
| 700 | 1 | |a Velasco-Cruz, Ciro |e verfasserin |4 aut | |
| 700 | 1 | |a Grimwood, Jane |e verfasserin |4 aut | |
| 700 | 1 | |a Schmutz, Jeremy |e verfasserin |4 aut | |
| 700 | 1 | |a Jenkins, Jerry |e verfasserin |4 aut | |
| 700 | 1 | |a Kumar, Sajal |e verfasserin |4 aut | |
| 700 | 1 | |a Song, Mingzhou |e verfasserin |4 aut | |
| 700 | 1 | |a Heerema, Richard J |e verfasserin |4 aut | |
| 700 | 1 | |a Grauke, L J |e verfasserin |4 aut | |
| 700 | 1 | |a Randall, Jennifer J |e verfasserin |4 aut | |
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