Biochemical and physiological changes produced by Azotobacter chroococcum (INIFAT5 strain) on pineapple in vitro-plantlets during acclimatization

• Autorzy: Gonzalez-Rodriguez R.M. , Serrato R. , Molina J. , Aragon C. E. , Olalde V. , Pulido L. E. , Dibut B. , Lorenzo J. C.
• Języki publikacji: EN

Abstrakty

EN

This study highlights some of the effects of the application of Azotobacter chroococcum (INIFAT5 strain) on in vitro-pineapple plantlets during acclimatization. The bacteria were sprayed immediately after transplanting to the ex vitro environment; the plants were then sprayed every 4 week. Subsequently (4 months) the evaluated variables included plantlet fresh and dry weights, leaf and root lengths, and composition of minerals, amino-acids, carbohydrates and proteins. Photosynthesis indicators were also evaluated. Significant effects of the application of Azotobacter over pineapple plantlets during acclimatization were observed in the mineral, amino-acid, carbohydrate and protein levels, as well as, in the photosynthesis indicators. Contrastingly, plant growth parameters showed modest increases caused by the bacteria, although they were statistically significant. Looking into specific minerals, the following significant effects of Azotobacter should be highlighted: increased levels of nitrogen, phosphorous, potassium, magnesium, copper and zinc. Moreover, contents of all amino-acids recorded showed significant increases in their levels in sprayed plantlets. Carbohydrates were also increased in leaves of plantlets bio-fertilized with the bacteria, mainly sucrose and fructose. Chlorophyll b levels were also significantly increased by Azotobacter. The biofertilizer did not modify levels of calcium, iron or manganese.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2013
• Tom: 35
• Numer: 12
• Opis fizyczny: p.3483-3487,fig.,ref.

Twórcy

autor

Gonzalez-Rodriguez R.M.

• Bioplant Centre, Universidad de Ciego de A vila, Carretera a Moro´n km 9.5, CP 69450, Cuba

autor

Serrato R.

• Laboratorio de Bioquımica Ecologica, Centro de Investigacion y Estudios Avanzados del IPN (CINVESTAV), Irapuato, Mexico

autor

Molina J.

• Laboratorio de Bioquımica Ecologica, Centro de Investigacion y Estudios Avanzados del IPN (CINVESTAV), Irapuato, Mexico

autor

Aragon C. E.

• Bioplant Centre, Universidad de Ciego de A vila, Carretera a Moro´n km 9.5, CP 69450, Cuba

autor

Olalde V.

• Laboratorio de Bioquımica Ecologica, Centro de Investigacion y Estudios Avanzados del IPN (CINVESTAV), Irapuato, Mexico

autor

Pulido L. E.

• Facultad de Agronomıa, Universidad de Ciego de A vila, Ciego de A vila, Cuba

autor

Dibut B.

• Instituto de Investigaciones Fundamentales de la Agricultura Tropical (INIFAT), Ciudad de La Habana, Cuba

autor

Lorenzo J. C.

• Bioplant Centre, Universidad de Ciego de A vila, Carretera a Moro´n km 9.5, CP 69450, Cuba

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