منابع مشابه
When good relationships go bad.
ycorrhizae are ancient, widespread associations between fungi and the roots of many species of plants. In these symbioses, the plants supply carbohydrates (the products of photosynthesis) to their fungal partners, which reciprocate by facilitating the uptake of mineral nutrients from the soil. In a reversal of the usual relationship , some non-photosynthetic plants — termed epiparasites — obtai...
متن کاملWhen Good Hues Go Bad
A psychophysical experiment was performed to determine the direction of least and most preferred color shifts for digital images. 360 images were subdivided into 18 hue regions. The pixels in each hue region were shifted eight directions in IPT color space, and observers were asked to classify which direction was least preferred, and which was most preferred. From these data preference maps wer...
متن کاملPlant Autoimmunity: When Good Things Go Bad.
A recent study finds that the Arabidopsis DM1 and DM2d proteins physically interact and trigger autoimmunity in plants. The DM1-DM2d interaction pattern differs from that of known immune receptor pairs, portraying the versatility in NLR functioning.
متن کاملWhen Good Software Goes Bad
In the very last published article of his long and distinguished career, the historian of computing Michael Mahoney asked a simple but profound question: “What makes the history of software hard?”1 In his characteristically playful style, Mike was engaging both with an issue of central importance to historians — namely, how can we begin to come to grips with the formidable challenges of writing...
متن کاملPathogen evolution: How good bacteria go bad
Recent findings suggest that dysentery-causing Shigella strains have arisen several times from Escherichia coli via plasmid acquisition and phenotypic convergence. Similarly, three Bacillus strains with distinct pathogenic properties are derivatives of a single species whose behavior is profoundly altered by acquired plasmids.
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ژورنال
عنوان ژورنال: Acta Crystallographica Section A Foundations and Advances
سال: 2014
ISSN: 2053-2733
DOI: 10.1107/s2053273314087300