Figure 1.
Collection of phloem sap with the laser-aphid-stylet-technique.
(A) A feeding aphid of the family Aphididae. Aphids insert their very fine mouthparts (stylets) into phloem tissue, where they feed on phloem sap. (B) The stylet (the dark line in the middle of the labium) of the aphid in position for firing the laser. (C) Droplet of phloem sap exuding from a cut stylet. (D) Exuded sap collecting in a microcapillary
Table 1.
Carbohydrate and amino acid concentrations in nectar, phloem sap and whole leaves from M. barclayana, L. erubescens and B. napus.
Table 2.
Different concentration ratios of carbon and nitrogen compounds in nectar, phloem sap and whole leaves from M. barclayana, L. erubescens and B. napus.
Table 3.
Relative abundances of carbohydrates and amino acids in nectar, phloem sap and whole leaves from M. barclayana, L. erubescens and B. napus.
Table 4.
Ratios of metabolite concentrations between phloem sap and nectar from M. barclayana, L. erubescens and B. napus.