Cold-hardened dark-grown seedlings of winter wheat (Triticum aestivum L.) and winter rye (Secale cereale L.) are killed during total encasement in ice at -1 C at a rate related to the initial cold hardiness of the cultivars. Few plants remain alive after 7 days of encasement. Nonhardened seedlings are rapidly killed in ice. The respiratory properties of mitochondria isolated from plants after i...

Saccharosydne is the most diverse genus of the tribe Saccharosydnini. Male, female and nymphal Saccharosydne have been captured in recent collections from garlic (Allium sativum), rye (Secale cereale) and pampas grass (Cortaderia spp.) in Argentina. In this contribution, we describe and illustrate a new species S. subandina sp. nov., adding information on the geographical distribution and host ...

The ability to control extracellular ice formation during freezing is critical to the survival of freezing-tolerant plants. Antifreeze proteins, which are proteins that have the ability to retard ice crystal growth, were recently identified as the most abundant apoplastic proteins in cold-acclimated winter rye (Secale cereale L.) leaves. In the experiments reported here, amino-terminal sequence...

Organic acids from w heat ( Triticum aestivum), rye (Secale cereale), and barley (Hordeum vulgare, var. “G erbel” and “ Igri” ) were analysed by gas c h ro m a to g ra p h y -m ass spectrom etry. Two carboxylic acid fractions were obtained by chrom atography on Sephadex LH 20: frac­ tion A contained m ainly aliphatic acids, fraction B contained m ainly arom atic acids. The identified com pounds...

The incorporation of [14C]choline chloride and [14C]glycerol into segments taken from rye (Secale cereale L., cv. Rheidal) roots was greater in segments from roots grown at 5 degrees C than in segments taken from roots growing at 20 degrees C. The incorporation was measured at the temperature at which the root had been growing. Measurements in vitro of the enzymes of the nucleotide pathway show...

Abstract Many recent studies have analysed plant species responses to environmental change, but interactive effects of global change drivers and how they are modulated by biotic interactions still poorly understood. In a mesocosm experiment, we studied the nitrogen (N) fertilization drought events on growth these shaped competitive interactions, using segetal community typical lowlands central ...