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https://hdl.handle.net/2440/104697
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Type: | Journal article |
Title: | Genetic diversity for mycorrhizal symbiosis and phosphate transporters in rice |
Author: | Jeong, K. Mattes, N. Catausan, S. Chin, J. Paszkowski, U. Heuer, S. |
Citation: | Journal of Integrative Plant Biology, 2015; 57(11):969-979 |
Publisher: | Wiley |
Issue Date: | 2015 |
ISSN: | 1672-9072 1744-7909 |
Statement of Responsibility: | Kwanho Jeong, Nicolas Mattes, Sheryl Catausan, Joong Hyoun Chin, Uta Paszkowski and Sigrid Heuer |
Abstract: | Phosphorus (P) is a major plant nutrient and developing crops with higher P-use efficiency is an important breeding goal. In this context we have conducted a comparative study of irrigated and rainfed rice varieties to assess genotypic differences in colonization with arbuscular mycorrhizal (AM) fungi and expression of different P transporter genes. Plants were grown in three different soil samples from a rice farm in the Philippines. The data show that AM symbiosis in all varieties was established after 4 weeks of growth under aerobic conditions and that, in soil derived from a rice paddy, natural AM populations recovered within 6 weeks. The analysis of AM marker genes (AM1, AM3, AM14) and P transporter genes for the direct Pi uptake (PT2, PT6) and AM-mediated pathway (PT11, PT13) were largely in agreement with the observed root AM colonization providing a useful tool for diversity studies. Interestingly, delayed AM colonization was observed in the aus-type rice varieties which might be due to their different root structure and might confer an advantage for weed competition in the field. The data further showed that P-starvation induced root growth and expression of the high-affinity P transporter PT6 was highest in the irrigated variety IR66 which also maintained grain yield under P-deficient field conditions. |
Keywords: | Mycorrhiza; P deficiency tolerance; phosphate transporters; rice; roots |
Rights: | © 2015 Institute of Botany, Chinese Academy of Sciences |
DOI: | 10.1111/jipb.12435 |
Published version: | http://dx.doi.org/10.1111/jipb.12435 |
Appears in Collections: | Agriculture, Food and Wine publications Aurora harvest 3 |
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