Lewis W H, Dixit A B, Wedner H J
Department of Biology, Washington University, St. Louis, Missouri.
Ann Allergy. 1991 Jul;67(1):47-52.
Volumetric air sampling was performed near Corpus Christi, Texas during all of 1988. The most significant weeds releasing airborne pollen, besides the Asteraceae, were the Amaranthaceae and Chenopodiaceae at 14.8% of total pollen captured, which peaked in September and October. Greater pollen capture (74%) occurred from a peak at 11 PM at a time when inversions are frequent to 9 AM than during the period from late morning to 9 PM. Frequency of amaranth-chenopod pollen capture in the western Gulf Coast region showed no relationship with frequencies along the northern and eastern Gulf Coast nor in eastern North America generally, but rather with western North America where these grains have also been sampled at high levels. As in the West, therefore, amaranth-chenopod aeropollen is sufficiently frequent to be a major source of allergens in the western Gulf Coast region. Other weedy plants, Cannabis/Humulus, Rumex, and the Urticaceae (Parieteria/Urtica) each account for only about 1% of the total annual pollen shed, and consequently they are not nearly as potentially relevant here in pollinosis as are the amaranth-chenopods and Asteraceae. Plantago pollen is very infrequently sampled (less than 0.1%) even though several species are common in the area. Acalypha is newly reported as releasing airborne pollen, a genus related to Mercurialis known to release allergenic pollen in Europe.
1988年全年在得克萨斯州科珀斯克里斯蒂附近进行了空气体积采样。除菊科外，释放气传花粉的最主要杂草是苋科和藜科，它们占捕获的总花粉的14.8%，在9月和10月达到峰值。花粉捕获量在晚上11点达到峰值时更高（74%），此时逆温现象频繁，一直到上午9点，而不是从上午晚些时候到晚上9点这段时间。墨西哥湾沿岸西部地区苋科 - 藜科花粉捕获频率与墨西哥湾北部和东部沿岸以及北美东部地区的频率均无关联，但与北美西部地区有关联，在那里也采集到了大量此类花粉。因此，与西部情况一样，苋科 - 藜科气传花粉在墨西哥湾沿岸西部地区足够频繁，成为主要的过敏原来源。其他杂草植物，大麻/葎草、酸模属以及荨麻科（墙草属/荨麻属）每年释放的花粉仅占总花粉量的约1%，因此它们在花粉症方面的潜在相关性远不及苋科 - 藜科和菊科。车前属花粉很少被采集到（不到0.1%），尽管该地区有几种车前属植物很常见。铁苋菜属被首次报道释放气传花粉，该属与在欧洲已知释放致敏花粉的山靛属有关。
