New records of poaceous rusts from Pakistan

Ishaq, A.; Afshan, Najam‐ul‐Sehar; Khalid, Abdul Nasir

doi:10.5248/118.237

Cited by 7 publications

(5 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Additionally, the size, shape, and presence of septal teliospores play a vital role in separating between species in this genus; however, telia are seldom found on ferns. It is imperative for researchers and scientists to meticulously examine these distinguishing features in order to accurately classify and study rust fungi, for example, H. minispora also formed a distinct lineage in phylogenetic analyses, with a close sister relationship to H. neocheilanthis, but H. neocheilanthis lacks amphispores (Wang et al 2021), H. aspidiotus, H. hakodatensis, and H. polypodii are distinguished by the presence of these two types of spores (Hiratsuka et al 1992). Amphispores are a specialized type of spore with unique characteristics such as increased darkness and thicker walls.…”

Section: Discussionmentioning

confidence: 99%

“…Rust fungi affecting ferns, such as species within the genera Hyalopsora, Milesina and Uredinopsis, comprise a signi cant portion of fern pathogens (Arthur 1924);To date,a total of 26 species of Hyalopsora have been reported globally (Arthur 1906;Kern 1914;Chen et al 1980;Hiratsuka et al 1992; Saba et al 2012), with eleven of these species documented in China, including H. aspidiotus, H. cryptogrammes, H. hakodatensis, H. japonica, H. polypodii, H. pseudocys-topteridis, H. taiwaniana, H. yunnanensis, H. tibetica, H. minispora, H. neocheilanthis (Chen 1982(Chen , 1989; Jian-yun 1983; Hiratsuka and Chen 1991; Yu et al 1997;Cao et al 2000;Kirschner et al 2019; Wang et al 2021). Rust fungi are known to infect a wide range of plant species, including crops like wheat, barley, corn, and soybeans, as well as ornamental plants, trees, and shrubs (Blythe et al 2014; Savary et al 2019).…”

Section: Introductionmentioning

confidence: 99%

“…The subtle morphological distinctions between their urediospores, amphispores, and teliospores pose challenges for species delineation within the genus Hyalopsora. Some species exhibit telia parasitizing the epidermal cells of ferns, producing dark brown teliospores that are nearly hyaline, thin-walled, and frequently septate (Hiratsuka et al 1992) with Sichuan Province's fern species count second only to Yunnan Province. Mount Emei alone is home to about 400 species of lycophytes and ferns (Zhang 2012).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

First Report of a New Species Hyalopsora erlangensis Causing Rust Disease on Cystopteris chinensis in China

Yu,

Zhao,

Chen

2024

Preprint

View full text Add to dashboard Cite

A newly discovered rust fungus poses a significant threat to the survival and reproduction of the endangered plant Cystopteris chinensis in a forest in western Sichuan province, China. This study utilized both morphological analysis and molecular phylogenetic approaches to classify this fungal taxon. Artificial inoculation experiments, which involved sampling uredia from the field, were conducted to fulfill Koch’s postulates. Our results designate this rust fungus as a novel species within the Pucciniastraceae family, named Hyalopsora erlangensis A. Yu & X.H. Chen. Morphological feature, including hyaline peridia cells, yellowish urediospores, dark brown amphidspores with three germ pores, and pigmental cytoplasma, differentiate this species from others in the genera Milesina, Uredinopsis, and Pucciniastrum. Phylogenetic analysis, based on internal transcribed spacer (ITS) sequences and 28S rDNA gene fragments, further confirms its distinctiveness from other Hyalopsora species, supported by high Maximum Parsimony (MP), Maximum Likelihood (ML), and Bayesian Inference (BI) bootstrap values. Artificial inoculation of both field-collected and tissue-cultured seedlings verified this fungus as the causing agent of C. chinensis rust disease, indicating a broad host range within the Cystoperis genus. Our research not only identifies the pathogen but also offers fundamental insights for the future management and conservation of this endangered fern, aiming to mitigate the impact of this devastating rust.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

First Report of a New Species Hyalopsora erlangensis Causing Rust Disease on Cystopteris chinensis in China

Yu,

Zhao,

Chen

2024

Preprint

View full text Add to dashboard Cite

show abstract

“…22 Food insecurity in Pakistan increased during 2004-2008 and 2011-2014 while decreased during 2009-2010 and 2014-2016. 23 Food insecurity incidence was found high in Balochistan and Sindh where employment opportunities are lower than other areas of the country. 24 Food insecurity trends showed visible impact of natural calamities, conflict, and food price hike.…”

Section: Food Accessibilitymentioning

confidence: 99%

Food Security in Pakistan and Need for Public Policy Adjustments

Ahmad

Saboor

2022

Policy Perspectives

View full text Add to dashboard Cite

Sustainable food and nutrition security solutions demand integration and alignment in public policies, particularly in the post-COVID-19 scenarios. The introduction of integrated public policies to address the food and nutrition needs in Pakistan is an immediate requirement. This study has applied the Foster, Greer and Thorbecke (FGT) index to estimate food and nutrition security dimensions through primary and secondary data. This analysis reveals that food utilization and sustainability have destabilized and deteriorated in Pakistan in recent years. It shows that non-farmers are more food insecure (8 percent) than farmers (4 percent) and this ratio has increased from 2008 to 2018. Food insecurity in terms of food availability and food accessibility has decreased. A holistic approach in public policies toward food security is the clarion call of the time. Therefore, the paper recommends that more focus should be given to knowledge transmission about dietary diversity, provision of quality education, and health facilities in the formulation as well as execution of food security policies.

show abstract

“…Rust fungi of Khyber Pakhtunkhwa are the least explored and so far only 174 rust species are explored (Ishaq, 2017). Recently, two species of rust fungi were reported from Shangla and Abbottabad, District of Khyber Pakhtunkhwa, Pakistan (Ishaq et al, 2011; Ishaq et al, 2020). Beside few reports on rust fungi from Khyber Pakhtunkhwa, rust attacks are very common in this region.…”

Section: Introductionmentioning

confidence: 99%

Taxonomic investigation of selected rust fungi using scanning electron microscopy from Khyber Pakhtunkhwa, Pakistan

Ijaz

Afza

Zafar

et al. 2021

Microscopy Res & Technique

View full text Add to dashboard Cite

Rusts comprises the largest natural group of plant pathogens including approximately 8% of all described Fungi. Rust fungi are extremely plant pathogens responsible for great losses to agriculture productivity. Rust species belong to several genera among which more than half are Puccinia species. In Pakistan, rust causes severe damage to agriculture crops. Current study was carried out to identify and characterize different rust species common in the research area through microscopy and Scanning electron microscopy (SEM) in Khyber Pakhtunkhwa, Pakistan. Morpho‐anatomical investigation of each collected rust species was carried out using different standard protocols. The dimensions of spores were measured and snapped under a stereomicroscope. SEM was used to examine the shape, size, and ornamentation of the spores of each rust fungus. Results revealed documentation of seven rust fungi, that is, Melampsora euphorbiae, Phragmidium barclayi, Puccinia nepalensis, P. exhausta, P. menthae, Uromyces capitatus, and Uromyces decorates belong to four different genera, were recorded. SEM revealed that spermogonia and Aecia were missing in most of the rust fungus studied. Uredinia was found in a scattered, irregular, lengthy, and epidermis‐enclosed form. Urediniospores were found to be ovulating, elongated, echinulate, globose to sub‐globose, ellipsoid to ovoid, and globose to sub‐globose. Telia was found as sub‐epidermal, amphigenous, dispersed, minute, and spherical cells. Teliospores ranged in form from cylindrical to oblong. The germ pores were detected in both apical (top cell) and basal (bottom cell) idiosyncratic and pedicel‐attached cells. The techniques used in the current investigation will aid mycologists in rust identification and microscopic characterization.

show abstract

New records of poaceous rusts from Pakistan

Cited by 7 publications

References 5 publications

First Report of a New Species Hyalopsora erlangensis Causing Rust Disease on Cystopteris chinensis in China

First Report of a New Species Hyalopsora erlangensis Causing Rust Disease on Cystopteris chinensis in China

Food Security in Pakistan and Need for Public Policy Adjustments

Taxonomic investigation of selected rust fungi using scanning electron microscopy from Khyber Pakhtunkhwa, Pakistan

Contact Info

Product

Resources

About