HTL/KAI2 signaling substitutes for light to control plant germination.

Plants monitor multiple environmental cues, such as light and temperature, to ensure they germinate at the right time and place. Some specialist plants, like ephemeral fire-following weeds and root parasitic plants, germinate primarily in response to small molecules found in specific environments. Although these species come from distinct clades, they use the same HYPOSENSITIVE TO LIGHT/KARRIKIN INSENSITIVE 2 (HTL/KAI2) signaling pathway, to perceive different small molecules suggesting convergent evolution on this pathway.

SMAX1-dependent seed germination bypasses GA signalling in Arabidopsis and Striga.

Parasitic plant infestations dramatically reduce the yield of many major food crops of sub-Saharan Africa and pose a serious threat to food security on that continent. The first committed step of a successful infestation is the germination of parasite seeds primarily in response to a group of related small-molecule hormones called strigolactones (SLs), which are emitted by host roots. Despite the important role of SLs, it is not clear how host-derived SLs germinate parasitic plants.

Endometrial response in sequential cyclic therapy assessed with associated hysteroscopy and histology.

A morphologic study was performed on the endometrium in 37 asymptomatic postmenopausal women under effects of cyclically administered oestrogens. Eighty-seven postmenopausal women were taken as control group. Medroxyprogesterone acetate (MPA), 10 mg daily, was administered in association with two types of oestrogen replacement therapy: conjugated equine oestrogens 0.

Uterine sarcomas: a clinicopathologic study.

A series of 48 cases with initial diagnosis of uterine sarcoma was reviewed to evaluate the validity of histologic criteria. The influence of pathologic and clinical prognostic factors and treatment modalities were examinated. The 32 patients included in this retrospective study after pathologic review had 5-year overall survival rate of 13.