Effects of Scion Variety on the Phosphorus Efficiency of Grafted <i>Camellia oleifera</i> Seedlings
Grafting provides a way to improve tolerance to low phosphorus (P) stress for plants, and has been extensively applied in commercial cultivars grafted onto appropriate rootstocks. However, little literature is available concerning the scion-mediated effect on P efficiency in grafted plants. In this...
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MDPI AG
2022-01-01
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| Series: | Forests |
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| Online Access: | https://www.mdpi.com/1999-4907/13/2/203 |
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| author | Jin Zeng Juan Liu Lunan Lian Aowen Xu Xiaomin Guo Ling Zhang Wenyuan Zhang Dongnan Hu |
| author_facet | Jin Zeng Juan Liu Lunan Lian Aowen Xu Xiaomin Guo Ling Zhang Wenyuan Zhang Dongnan Hu |
| author_sort | Jin Zeng |
| collection | DOAJ |
| description | Grafting provides a way to improve tolerance to low phosphorus (P) stress for plants, and has been extensively applied in commercial cultivars grafted onto appropriate rootstocks. However, little literature is available concerning the scion-mediated effect on P efficiency in grafted plants. In this study, three different <i>Camellia oleifera</i> Abel. scion cultivars (G8, G83-1, and W2) were grafted onto the same rootstock (W2) under controls (0.5 mM) and low-P (0 mM) availability for eight months. The results showed that the scions significantly affected root-to-shoot weight ratios, the root morphology with a diameter larger than 1 mm, P accumulation, and the P utilization efficiency (PUE) of the root. A higher increase in the root-to-shoot weight ratio under the low-P supply was observed in the G83-1/W2 (26.15%) than in the G8/W2 (0%) and the W2/W2 (5.32%). Root PUE of the scion G8, G83-1, and W2 was improved by up to 113.73%, 45.46%, and 20.97% under the low-P supply. Moreover, G8/W2 exhibited higher shoot P accumulation and the highest root PUE under the low-P supply, indicating a high capability to tolerate P deficiency by maximizing the cost-effectiveness of P remobilization to photosynthetic organs. This suggested the vigorous variety of G8 could be a promising scion to improve grafted <i>C. oleifera</i> tolerance to low-P stress. Our results would have important implications for exploration and identification of a superior scion variety to enhance the ability of resistance concerning P deficiency stress in <i>C. oleifera</i>. |
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| issn | 1999-4907 |
| language | English |
| last_indexed | 2024-03-09T21:57:18Z |
| publishDate | 2022-01-01 |
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| spelling | doaj.art-0e4049f085bb40b5bd73c503f465690e2023-11-23T19:55:51ZengMDPI AGForests1999-49072022-01-0113220310.3390/f13020203Effects of Scion Variety on the Phosphorus Efficiency of Grafted <i>Camellia oleifera</i> SeedlingsJin Zeng0Juan Liu1Lunan Lian2Aowen Xu3Xiaomin Guo4Ling Zhang5Wenyuan Zhang6Dongnan Hu7College of Forestry, Jiangxi Agricultural University, Nanchang 330045, ChinaCollege of Forestry, Jiangxi Agricultural University, Nanchang 330045, ChinaCollege of Forestry, Jiangxi Agricultural University, Nanchang 330045, ChinaCollege of Forestry, Jiangxi Agricultural University, Nanchang 330045, ChinaCollege of Forestry, Jiangxi Agricultural University, Nanchang 330045, ChinaCollege of Forestry, Jiangxi Agricultural University, Nanchang 330045, ChinaCollege of Forestry, Jiangxi Agricultural University, Nanchang 330045, ChinaKey Laboratory of National Forestry and Grassland Administration for the Protection and Restoration of Forest Ecosystem in Poyang Lake Basin, Nanchang 330045, ChinaGrafting provides a way to improve tolerance to low phosphorus (P) stress for plants, and has been extensively applied in commercial cultivars grafted onto appropriate rootstocks. However, little literature is available concerning the scion-mediated effect on P efficiency in grafted plants. In this study, three different <i>Camellia oleifera</i> Abel. scion cultivars (G8, G83-1, and W2) were grafted onto the same rootstock (W2) under controls (0.5 mM) and low-P (0 mM) availability for eight months. The results showed that the scions significantly affected root-to-shoot weight ratios, the root morphology with a diameter larger than 1 mm, P accumulation, and the P utilization efficiency (PUE) of the root. A higher increase in the root-to-shoot weight ratio under the low-P supply was observed in the G83-1/W2 (26.15%) than in the G8/W2 (0%) and the W2/W2 (5.32%). Root PUE of the scion G8, G83-1, and W2 was improved by up to 113.73%, 45.46%, and 20.97% under the low-P supply. Moreover, G8/W2 exhibited higher shoot P accumulation and the highest root PUE under the low-P supply, indicating a high capability to tolerate P deficiency by maximizing the cost-effectiveness of P remobilization to photosynthetic organs. This suggested the vigorous variety of G8 could be a promising scion to improve grafted <i>C. oleifera</i> tolerance to low-P stress. Our results would have important implications for exploration and identification of a superior scion variety to enhance the ability of resistance concerning P deficiency stress in <i>C. oleifera</i>.https://www.mdpi.com/1999-4907/13/2/203graftingscion variety<i>Camellia oleifera</i>root morphologylow-P supply |
| spellingShingle | Jin Zeng Juan Liu Lunan Lian Aowen Xu Xiaomin Guo Ling Zhang Wenyuan Zhang Dongnan Hu Effects of Scion Variety on the Phosphorus Efficiency of Grafted <i>Camellia oleifera</i> Seedlings Forests grafting scion variety <i>Camellia oleifera</i> root morphology low-P supply |
| title | Effects of Scion Variety on the Phosphorus Efficiency of Grafted <i>Camellia oleifera</i> Seedlings |
| title_full | Effects of Scion Variety on the Phosphorus Efficiency of Grafted <i>Camellia oleifera</i> Seedlings |
| title_fullStr | Effects of Scion Variety on the Phosphorus Efficiency of Grafted <i>Camellia oleifera</i> Seedlings |
| title_full_unstemmed | Effects of Scion Variety on the Phosphorus Efficiency of Grafted <i>Camellia oleifera</i> Seedlings |
| title_short | Effects of Scion Variety on the Phosphorus Efficiency of Grafted <i>Camellia oleifera</i> Seedlings |
| title_sort | effects of scion variety on the phosphorus efficiency of grafted i camellia oleifera i seedlings |
| topic | grafting scion variety <i>Camellia oleifera</i> root morphology low-P supply |
| url | https://www.mdpi.com/1999-4907/13/2/203 |
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