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Nitrogen fixation in a landrace of maize is supported by a mucilage-associated diazotrophic microbiota

Table 1

Natural abundance 15N determinations.

(A) δ15N values from Sierra Mixe maize, a conventional maize variety (Maiz Blanco Conasupo), and reference plants grown in Sierra Mixe, 3 months after planting. Values are given as mean and standard deviation. Statistical comparisons were made between the means of the reference plants, Maiz Blanco Conasupo, and Z. mays S. Mixe, using Student t tests (p < 0.05). Different letters indicate statistically supported groups. (B) δ15N values from Sierra Mixe maize plants grown in Fields 1 and 2 in Sierra Mixe during 2011 and 2012 at 2, 3, 4, 5, and 6 months after planting. Values are given as mean and standard deviation. Statistical comparisons were made between the reference plants mean and Z. mays S. Mixe means at each time point using Student t tests (p < 0.05). Different letters indicate statistically supported groups. Reference plants are listed in S3 Table. (Data at DOI: 10.6084/m9.figshare.6534545).

Table 1

doi: https://doi.org/10.1371/journal.pbio.2006352.t001