Please use this identifier to cite or link to this item: http://cicy.repositorioinstitucional.mx/jspui/handle/1003/1609
Glomus intraradices attenuates the negative effect of low Pi supply on photosynthesis and growth of papaya maradol plants
Yolanda Nava Gutiérrez
Ronald Ferrera Cerrato
Jorge Manuel Santamaría Fernández
Acceso Abierto
Atribución-NoComercial-SinDerivadas
doi:10.1155/2012/129591
PAPAYA MARADOL
GLOMUS INTRARADICES
PHOTOSYNTHESIS
Low inorganic phosphorus (Pi) supply limits the photosynthetic process and hence plants growth and development. Contradictory reports exist in the literature on whether mycorrhyzal association can attenuate the negative effects of low Pi supply on photosynthesis and growth. In the present paper, the effect that low Pi supply may have on photosynthesis and growth of papaya Maradol plants was evaluated in intact plants and in those inoculated with two different strains of the arbuscular mycorrhizal fungi Glomus intraradices. Plant growth was significantly reduced as the Pi supply decreased. However, inoculation with any strain of G. intraradices was able to attenuate such effect. Without Pi in the nutrient solution, the mycorrhizal plants had on average 6.1 times and 7.5 higher photosynthesis than non mycorrhizal plants. The chlorophyll fluorescence values were significantly higher in mycorrhizal than in non-mycorrhizal plants. These results could be associated to an increased ability of mycorhyzal plants to take up Pi from the substrate, as they had higher Pi content than non-mycorrhizal plants. A high correlation was found between internal Pi content and plant biomass. The lower correlation between Pi content and photosynthesis, suggests that some photosynthates could had been used to maintain the symbiosis.
2011
Artículo
Journal of Botany, Volume 2012, Article ID 129591 2012
Inglés
Yolanda, N. G., Ferrera-Cerrato, R., & Santamaría, J. M. (2012). Glomus intraradices attenuates the negative effect of low Pi supply on photosynthesis and growth of papaya Maradol plants. Journal of Botany, Volume 2012, Article ID 129591 2012.
BIOLOGÍA MOLECULAR DE PLANTAS
Versión publicada
publishedVersion - Versión publicada
Appears in Collections:Artículos de Investigación Arbitrados

Upload archives


File SizeFormat 
id20402_Yolanda_Nava.PDF844.94 kBAdobe PDFView/Open