The Relationship between Photosynthesis and a Mastoparan-Induced Hypersensitive Response in Isolated Mesophyll Cells1

The G-protein activator mastoparan (MP) was found to elicit the hypersensitive response (HR) in isolated Asparagus sprengeri mesophyll cells at micromolar concentrations. The HR was characterized by cell death, extracellular alkalinization, and an oxidative burst, indicated by the reduction of molecular O2 to O2⋅−. To our knowledge, this study was the first to monitor photosynthesis during the HR. MP had rapid and dramatic effects on photosynthetic electron transport and excitation energy transfer as determined by variable chlorophyll a fluorescence measurements. A large increase in nonphotochemical quenching of chlorophyll a fluorescence accompanied the initial stages of the oxidative burst. The minimal level of fluorescence was also quenched, which suggests the origin of this nonphotochemical quenching to be a decrease in the antenna size of photosystem II. In contrast, photochemical quenching of fluorescence decreased dramatically during the latter stages of the oxidative burst, indicating a somewhat slower inhibition of photosystem II electron transport. The net consumption of O2 and the initial rate of O2 uptake, elicited by MP, were higher in the light than in the dark. These data indicate that light enhances the oxidative burst and suggest a complex relationship between photosynthesis and the HR.

Victory Memorial cook book.

Includes household hints; recipes for Spanish, English, Italian dishes; some recipes include wine or liquor as an ingredient. Sample recipes: Cream asparagus soup; Bocados de reina (Food for a queen); Currant pasties, old fashioned "scalby cakes"; Montauk sandwiches.

Miss Parloa's young housekeeper : designed especially to aid beginners : economical receipts for those who are cooking for two or three /

Cf. Bitting, K.G. Gastronomic bib., p. 357.

[Culinary ephemera : gelatin and tapioca].

Corporate contributors include: Genesee Pure Food Company; Jell-O-Co. Inc.

The vegetables of New York ...

Vol. I, pt. I- issued as a report of the New York Agricultural Experiment Station at Geneva for the year ending June 30, 1928;June 30, 1931; June 30, 1934

Sphaeria comatella; Sphaeriaceae

Sphaeria comatella Cooke & Ellis

The gardener /

v. 1. The potato, cucumber, gooseberry, strawberry, and dahlia -- v. 2. The auricula, asparagus, and pine apple -- v. 3. The peach and grape vine.