The nematode species Meloidogyne incognita infects a large variety of cultivated crops and is one of nature’s most notorious pests. One cultivated plant which is prone to M. incognita infestation is the tomato. Knowing that in A. thaliana the PIN auxin efflux transporters distribution is being altered upon early invasion by M. incognita, the PIN1 allocation patterns in the giant cells of tomato plants after 15 and 25 days of infection were investigated. PIN1 was absent from the giant cells’ membrane in both assessment timings examined, indicating the maintenance of a local auxin maxima, which was also supported by IAA immunodetection. PIN1 distribution pattern could be attributed on either the nematodes nutritional needs throughout its life cycle or due to the tomato plants differential responses upon M. incognita infection.

线虫物种南方根结线虫感染多种栽培作物，是自然界最臭名昭著的害虫之一。一种容易受到南方根结线虫侵染的栽培植物是番茄。知道在拟南芥中，PIN 生长素外排转运蛋白的分布在M. incognita早期入侵时发生了改变，研究了感染 15 天和 25 天后番茄植株巨细胞中 PIN1 的分配模式。在检查的两个评估时间中，巨细胞膜中都不存在 PIN1，表明维持了局部生长素最大值，IAA 免疫检测也支持这一点。PIN1 分布模式可归因于线虫整个生命周期的营养需求，或归因于番茄植株对M. incognita感染的不同反应。