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Fig. 2 | BMC Biology

Fig. 2

From: Are we there yet? The long walk towards the development of efficient symbiotic associations between nitrogen-fixing bacteria and non-leguminous crops

Fig. 2

Main approaches to engineer or improve biological nitrogen fixation in cereals. 1 Improving nitrogen-fixing bacteria: (a) [153], (b) [111, 113], (c) [154], (d) [152], (e) [110, 144, 171]. 2 Making crops better hosts for nitrogen-fixing bacteria: (a) [127], (b) [83], (c) [56]. 3 Allowing crops to fix their nitrogen without microbes [209]

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