Sulphur supply to peas (Pisum sativum L.) influences symbiotic N₂ fixation

Abstract

In a pot experiment (culture substrate: perlite with a granulometric composition 0-3 mm) with peas (Pisum sativum L.) we studied the influence of sulphur supply on S and N concentrations, yield formation, symbiotic N 2 fixation and available amounts of glucose and sucrose. Under S deficiency conditions S and N concentrations as well as the amounts of glucose and sucrose in shoots and nodules were significantly reduced. We assume that the reduced amounts of available photosynthate with suboptimal S supply could become limiting to energy production and as carbon skeletons for ammonia assimilation, and therefore cause a lower N 2 fixation and a reduced yield formation.

Is white clover able to switch to atmospheric sulphur sources when sulphate availability decreases?

“…In agreement with previous studies concerning white clover (Varin et al, 2009(Varin et al, , 2010 or other legumes (Scherer and Lange, 1996;Scherer et al, 2006Scherer et al, , 2008, the present study confirms the strong dependence of white clover growth on sulphate availability. This dependence was evidenced in Fig.…”

Rhizobium inoculation and sulphur fertilizer improved yield, nutrients uptake and protein quality of soybean (Glysine max L.) varieties on Nitisols of Assosa area, Western Ethiopia

“…But when applied in combination known to create a more synergism, which was helpful in improved plant growth, including nutrient uptake in the plants and the improved protein content. In legumes, previous studies showed that S deficiency decreases N assimilation and fixation (Scherer et al, 2006). In addition, modifies seed protein composition by decreasing the abundance of storage proteins with the highest content of S-containing amino acid, while increasing the level of S-poor globulins (Zuber et al, 2013).…”

“…Ferredoxin has a significant role in NO 2 and sulphate reduction, the assimilation of N by root nodule bacteria and frees living N-fixing soil bacteria (Scherer et al, 2008). A study revealed lower N accumulation and a yield reduction of legumes when S was limiting (Scherer et al, 2006) and also recognized as a limiting factor not only for crop growth and seed yield but also for quality of products (Jemal et al, 2010). Because S is a main component of the amino acids methionine, cysteine, and cystine, coenzymes, thioredoxine and sulfolipids and hence improves protein quality (Jemal et al, 2005).…”

Relative Efficiency of Two Sulfur Sources Regarding Nitrogen Fixation and Yield of Chickpea

“…In European countries, work mostly is focused on peas (Pisum sativum L.), and 78% yield increase has been reported in pot experiments (Scherer et al 2006). Research regarding efficiency of S sources in enhancing nitrogen (N) fixation is very rare.…”