Uromycladium tepperianum, the gall rust fungus from Falcataria moluccana in Malaysia and Indonesia

Abstract

Batai (Falcataria moluccana) is a valuable tree species for forest plantations in Malaysia and Indonesia.

Effect of temperature, leaf wetness and the developmental stage of host tissue on infection of Acacia mearnsii by Uromycladium acaciae (Pucciniales)

“…The observation of infection of A. mearnsii by basidiospores demonstrated that U. acaciae is an autoecious rust, as has been proposed for all species of Uromycladium (Cunningham 1923;Berndt 2010). The production of basidiospores by germinating teliospores has been reported previously for U. falcatarium on P. falcataria in Malaysia (Rahayu et al 2010). Under conditions of high humidity, teliospores of this species germinate to produce basidiospores after 10 hours.…”

“…Under conditions of high humidity, teliospores of this species germinate to produce basidiospores after 10 hours. After a further 6 hours, basidiospores produce a penetration peg, which penetrates host cells directly through the epidermis (Rahayu et al 2010). In contrast, teliospores of U. tepperianum do not produce basidiospores, but rather infect epidermal cells of A. saligna directly with penetration pegs after 12-24 hours at 20°C.…”

“…Teliospores of U. tepperianum remain viable for weeks during winter, but are killed by a few hot, dry days in summer (Burges 1935). In comparison, the teliospores of U. falcatarium germinate on the surface of susceptible plants to produce basidiospores, which then germinate to produce penetration pegs that infect the plant directly through the epidermal cells (Rahayu 2010). Nothing is known about the infection behaviour of other species of Uromycladium.…”

The Control of Fungus Uromycladium tepperianum on Seedling of Sengon (Falcataria moluccana (Miq.) Barneby & J.W.Grimes) in a nursery

“…(Anggraeni & Lelana, 2011;Rahayu, Lee, & Shukor, 2010). Selain pada tanaman dewasa, penyakit karat puru juga ditemukan menyerang tanaman muda di persemaian (Lestari, Rahayu, & Widiyatno, 2013;Rahayu ., 2010 (Dwiastuti, Fajri, & Yunimar, 2015 …”

Risk and pathway assessment for the introduction of exotic insects and pathogens that could affect Hawai'i's native forests

“…Pest with host-commodity at origin potential: High During the infection process, the teliospore germinates to produce a basidiospore on the host surface. Under favorable conditions (relative humidity > 90 percent), the basidiospore forms a penetration peg, which penetrates the host cells directly through the epidermis (Rahayu et al 2010).…”