Functions of autophagy in plant carbon and nitrogen metabolism
Carbon and nitrogen are essential components for plant growth. Although models of plant carbon and nitrogen metabolisms have long been established, certain gaps remain unfilled, such as how plants are able to maintain a flexible nocturnal starch turnover capacity over various light cycles, or how ni...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2014-06-01
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| Series: | Frontiers in Plant Science |
| Subjects: | |
| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fpls.2014.00301/full |
| _version_ | 1818940069087543296 |
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| author | Chenxia eRen Jingfang eLiu Qingqiu eGong Qingqiu eGong |
| author_facet | Chenxia eRen Jingfang eLiu Qingqiu eGong Qingqiu eGong |
| author_sort | Chenxia eRen |
| collection | DOAJ |
| description | Carbon and nitrogen are essential components for plant growth. Although models of plant carbon and nitrogen metabolisms have long been established, certain gaps remain unfilled, such as how plants are able to maintain a flexible nocturnal starch turnover capacity over various light cycles, or how nitrogen remobilization is achieved during the reproductive growth stage. Recent advances in plant autophagy have shed light on such questions. Not only does autophagy contribute to starch degradation at night, but it participates in the degradation of chloroplast proteins and even chloroplasts after prolonged carbon starvation, thus help maintain the free amino acid pool and provide substrate for respiration. The induction of autophagy under these conditions may involve transcriptional regulation. Large-scale transcriptome analyses revealed that ATG8e belongs to a core carbon signaling response shared by Arabidopsis accessions, and the transcription of Arabidopsis ATG7 is tightly co-regulated with genes functioning in chlorophyll degradation and leaf senescence. In the reproductive phase, autophagy is essential for bulk degradation of leaf proteins, thus contributes to Nitrogen Use Efficiency (NUE) both under normal and low-nitrogen conditions. |
| first_indexed | 2024-12-20T06:33:46Z |
| format | Article |
| id | doaj.art-aaddc802199e4d2c8e6f664d4c151f7f |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-12-20T06:33:46Z |
| publishDate | 2014-06-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Plant Science |
| spelling | doaj.art-aaddc802199e4d2c8e6f664d4c151f7f2022-12-21T19:50:03ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2014-06-01510.3389/fpls.2014.0030197556Functions of autophagy in plant carbon and nitrogen metabolismChenxia eRen0Jingfang eLiu1Qingqiu eGong2Qingqiu eGong3Nankai UniversityNankai UniversityNankai UniversityTianjin Key Laboratory of Protein ScienceCarbon and nitrogen are essential components for plant growth. Although models of plant carbon and nitrogen metabolisms have long been established, certain gaps remain unfilled, such as how plants are able to maintain a flexible nocturnal starch turnover capacity over various light cycles, or how nitrogen remobilization is achieved during the reproductive growth stage. Recent advances in plant autophagy have shed light on such questions. Not only does autophagy contribute to starch degradation at night, but it participates in the degradation of chloroplast proteins and even chloroplasts after prolonged carbon starvation, thus help maintain the free amino acid pool and provide substrate for respiration. The induction of autophagy under these conditions may involve transcriptional regulation. Large-scale transcriptome analyses revealed that ATG8e belongs to a core carbon signaling response shared by Arabidopsis accessions, and the transcription of Arabidopsis ATG7 is tightly co-regulated with genes functioning in chlorophyll degradation and leaf senescence. In the reproductive phase, autophagy is essential for bulk degradation of leaf proteins, thus contributes to Nitrogen Use Efficiency (NUE) both under normal and low-nitrogen conditions.http://journal.frontiersin.org/Journal/10.3389/fpls.2014.00301/fullAutophagyCarbonChloroplastsNitrogenStarch |
| spellingShingle | Chenxia eRen Jingfang eLiu Qingqiu eGong Qingqiu eGong Functions of autophagy in plant carbon and nitrogen metabolism Frontiers in Plant Science Autophagy Carbon Chloroplasts Nitrogen Starch |
| title | Functions of autophagy in plant carbon and nitrogen metabolism |
| title_full | Functions of autophagy in plant carbon and nitrogen metabolism |
| title_fullStr | Functions of autophagy in plant carbon and nitrogen metabolism |
| title_full_unstemmed | Functions of autophagy in plant carbon and nitrogen metabolism |
| title_short | Functions of autophagy in plant carbon and nitrogen metabolism |
| title_sort | functions of autophagy in plant carbon and nitrogen metabolism |
| topic | Autophagy Carbon Chloroplasts Nitrogen Starch |
| url | http://journal.frontiersin.org/Journal/10.3389/fpls.2014.00301/full |
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