Responses of rubber tree seedlings (Hevea brasiliensis) to phosphorus deficient soils
7
Issued Date
2023-01-01
Resource Type
ISSN
00380768
eISSN
17470765
Scopus ID
2-s2.0-85145713699
Journal Title
Soil Science and Plant Nutrition
Volume
69
Issue
2
Start Page
78
End Page
87
Rights Holder(s)
SCOPUS
Bibliographic Citation
Soil Science and Plant Nutrition Vol.69 No.2 (2023) , 78-87
Suggested Citation
Saengwilai P.J., Bootti P., Klinnawee L. Responses of rubber tree seedlings (Hevea brasiliensis) to phosphorus deficient soils. Soil Science and Plant Nutrition Vol.69 No.2 (2023) , 78-87. 87. doi:10.1080/00380768.2022.2164675 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/81500
Title
Responses of rubber tree seedlings (Hevea brasiliensis) to phosphorus deficient soils
Author(s)
Author's Affiliation
Other Contributor(s)
Abstract
While the adaptation and responses of model plants to phosphorus (P) deficiency are well documented, those of the rubber tree remain unclear. Here, we investigated above‐ and below‐ground responses of rubber tree seedlings over the development of the first to third extension unit in a mesocosm system. Rubber tree seedlings were grown in high and low phosphorus soil for 7 months. Tissue nutrient contents, morphological, and physiological traits were quantified. We found that low P significantly reduced leaf P content, photosynthetic capabilities, and induced the accumulation of phenolic and flavonoid compounds, particularly in old leaves. Root traits were significantly affected by P stress early in their development. Root surface area and volume were increased through reduced lateral root branching and increased lateral root length. The alteration of root architectural traits took place prior to the reduction of P content in roots and leaves. Our findings provide new insights into rubber tree physiology and the effective fertilization management of rubber plantation in low P soils.