NZGA: Research and Practice Series

R&P 18 Grass Microbial Endophytes 2025

• A historical perspective on the International Symposium of Grass Microbial Endophytes

  Carolyn Young, David Hume

  11

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• Epichloë endophytes – underpinning sustainable food production from pastoral systems

  John Roche

  13

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• Epichloë evolution: What ChatGPT won’t tell you

  Christopher Schardl

  15-16

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• Epichloë endophytes – from science to commercial impact

  Linda Johnson

  17

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• Prevalence of seedborne symbionts in grass populations: connecting host fitness, endophyte transmission and intergenerational effects

  Pedro Gundel

  19

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• Coevolution of Pooideae grasses and their Epichloë endophytes within a hologenome framework

  Pilar Catalán , Alba Sotomayor-Alge , Íñigo Zabalgogeazcoa , Diana Calderón , Chunlin Chen , Wenjie Mu, Miguel Campos , Ma Angeles Decena , Beatriz Larruy, Ernesto Pérez-Collazos , Luis Ángel Inda

  21

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• Decomposition potentialities of Epichloë bromicola from Elymus racemifer

  Yuki Hatano, Yuya Maegawa, Natsuko Uenoyama, Takashi Osono

  23-28

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• New Zealand’s pastoral ecosystems: challenges, solutions, and the protective role of Epichloë endophytes

  Katrin Gabriela Hewitt, Rainer Hofmann, Olivier Ball, Sarah Finch, Racheal Bryant, Alison Popay

  29-44

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• Identification of biomarkers associated with the survival of selected Epichloë endophytes while in seed storage

  Sushma Prakash, Paul Maclean, Madison Hooper, Min Zhou, Wade Mace, Stuart Card

  45-54

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• Using tall fescue symbiotic diversity to improve pasture resilience and sustainability

  Alayna Jacobs, Jim Nelson, A. Elizabeth Carlisle, Mahtaab Bagherzadeh, Huihua Ji, Victoria Stanton, Rebecca McCulley

  55

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• Mentoring undergraduate research with the Epichloë-tall fescue symbiosis

  Tammy Tintjer

  57

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• Combined analysis of population genetic structures in a living-fossil grass Brachyelytrum erectum, and its endophyte Epichloë brachyelytri.

  Christopher Schardl , Padmaja Nagabhyru , Andrew Tapia , Patrick Calie , Simona Florea , Neil Moore , Jerzy Jaromczyk , Carolyn Young

  59

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• Transgenerational trade-off: the hidden costs of maternal defoliation in grass–endophyte symbiosis

  Benjamin Fuchs, Anne Muola, Marjo Helander, Kari Saikkonen

  61

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• Hidden players in evolution: The impact of mutualistic fungal Epichloë endophytes on niche breadth and diversification across Poa (bluegrass)

  Eleanor Hay, Christopher Searcy, Michelle Afkhami

  63

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• Enhancing plant defence: The role of mutualistic fungi in silicon-mediated pest resistance

  Ximena Cibils-Stewart, Wade Mace, Jeff Powell, Alison Popay, Fernando Lattanzi, Susan Hartley, Scott Johnson

  65-66

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• The pyrrolodiazipic acids: a new class of alkaloids produced during the virulent sexual cycle of Epichloë fungi

  Daniel Berry, Katrin Grage, Christopher Schardl, Yvonne Becker, Wade Mace, Arvina Ram, Yan-Ni Shi, Carolyn Young, Paul Dijkwel, Artemis Treindl, Adrian Leuchtmann, Barry Scott

  67

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• Can you see the light? How microbes and polar light environments orchestrate plant adaptations and global biodiversity

  Kari Saikkonen

  69

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• Epichloë endophytes mediate transgenerational effects in Achnatherum inebrians by enhancing photosynthetic capacity under drought stress

  Chao Xia, Wen He, Xingxu Zhang

  71

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• Similarities and differences of metabolic potential among three Epichloë species by LC-MS

  Tian Wang, Taixiang Chen, Chunjie Li

  73

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• Multi-omics elucidation of the phytohormone biosynthetic pathways in Epichloë sinensis

  Yang Luo, Pei Tian

  75

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• The dynamics of selfish self-splicing introns in mitochondrial genomes of Epichloë endophytes

  Jennie Chan, Mauro Truglio, Christopher Schardl, Murray Cox, Carolyn Young, Austen Ganley

  77

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• CRISPR-Cas9 gene insertion in Epichloë species

  Taryn Miller, Debbie Hudson, Nazanin Noorifar, Wade Mace, Richard Johnson, Linda Johnson

  79-88

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• Decoding horizontal gene transfer mechanisms in Epichloë–grass symbiosis

  Haotian Shi, Haijuan Zhang , Chunjie Li, Lei Lei

  89

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• Identification of a domain of unknown function family gene involved in mediating the drought tolerance of Achnatherum inebrians colonised by an Epichloë endophyte

  Yali He, Haijuan Zhang, Yiyi Wang, Chunjie Li, Lei Lei

  91

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• Establishment of an efficient genetic transformation system for the Achnatherum inebrians-Epichloë symbiosis

  Zhixia Wang, Yiyi Wang, Jinhao Shao, Lei Lei

  93

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• Dissection of the epoxyjanthitrem pathway in Epichloë sp. LpTG-3 strain AR37 by CRISPR gene editing to deliver improved SDN-1 type endophytes for grasses

  Linda Johnson, Natasha Forester, Debbie Hudson, Taryn Miller, Wade Mace, David Hume, Pranav Chettri, Alison Popay, Sarah Finch, Paul Maclean, Jaspreet Sidhu, Christine Voisey, Richard Johnson

  95

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• Split-marker recombination for fast and efficient targeted deletion of Epichloë genes

  Haijuan Zhang, Haotian Shi, Chunjie Li, Lei Lei

  97

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• An efficient protoplast transient expression system developed for Achnatherum inebrians

  Yiyi Wang, Jinhao Shao, Lei Lei

  99

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• The novel host barley produced a rapid defence response to Epichloë endophyte by elucidating gene regulation

  Kamran Malik, Taixiang Chen, Chunjie Li

  101

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• Receptor-like kinases (RLKs) mediate enhanced immune responses in the Achnatherum inebrians-Epichloë gansuensis symbiotic system against Claviceps pathogen infection

  Tao Yang, Haijuan Zhang, Haotian Shi, Lei Lei

  103

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• Diversity, ecology and applications of Epichloë endophytes from South America

  Leopoldo Iannone

  105

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• An Epichloë endophyte associated with the Afromontane grass Festuca simensis

  Stuart Card, Michael Christensen, Nicholas Ellison, Marty Faville, David Hume, Richard Johnson, Wade Mace, Mary Namaganda, Jaspreet Singh Sidhu, Wei Zhang, Alan Stewart

  107-119

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• Harnessing rhizosphere Bacillus and Epichloë symbionts to promote the performance of Achnatherum inebrians within arid ecosystems

  Jinjin Liang, Xingxu Zhang

  123

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• How Epichloë and arbuscular mycorrhizal fungi interact with wild barley under salt stress

  Yufan Pang, Jinchen Li, Zhenjiang Chen, Chunjie Li

  125

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• Uncovering Alkaloid chemotype diversity in natural Festuca–Epichloë festucae symbioses across Iberian ecosystems

  Alba Sotomayor-Alge , Beatriz Vázquez de Aldana, Íñigo Zabalgogeazcoa, Padmaja Nagabhyru, Christopher Schardl, Luis Inda, Stephen Lee , Pilar Catalán

  127

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• Physiological response of Hordeum brevisubulatum-Epichloë bromicola ecotypes to mixed salt stress

  Yurun Zhai, Zhenjiang Chen, Chunjie Li

  129

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• Infection frequencies, alkaloid content and characteristics of Epichloë festucae var. lolii in Lolium perenne within German grasslands along a land-use intensity gradient

  Jochen Krauss

  131

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• Improved methodology for the isolation of Epichloë endophytes from Achnatherum inebrians

  Zheng Liang, Xuekai Wei, Chunjie Li

  133

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• Occurrence and toxicity of Epichloë endophytes in German grasslands

  Tabea Lang, Jochen Krauss

  135

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• Exploring wild Bromus-Epichloë interactions in Uruguay: genetic diversity, eco-geographic distribution, and antiherbivore effects

  Lucia Meneses, Carolyn Young, Leopoldo Iannone , Ximena Cibils-Stewart, Federico Condón

  139

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• Exploring Epichloë endophytes in Scottish wild barley for enhanced crop resilience

  Lorena Rangel, Sarah Light, Victoria Buswell, Beatrix Keillor, Damian Bienkowski

  141

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• Germplasm survey and collection of Festuca sinensis accessions associated with the endophyte Epichloë sinensis

  Pei Tian, Tao Hu, Chao Xia, Jiawen Sun, Yanqun Zhao, Zhongxiang Li, Mei Zhang, Longxuan Cui, Jinhui Shen, Yang Luo, Yue Gao, Wei Zhou, Taixiang Chen, Tian Wang, Mingxiang Du, Wencong Liu, Chunjie Li, Zhibiao Nan

  145

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• Fungal endophytes for disease control in cereals

  David Collinge, Arianna Petrucci, Alfia Khairullina, Seán Conlan, Sabrina Sarrocco, Hans Jørgensen, Birgit Jensen

  147

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• Breeding turfgrasses with Epichloë endophytes for abiotic and biotic stress tolerance

  Steve Reid, Barbara Hinds-Cook, Alan Stewart

  149

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• AR128 - a new Epichloë fungal endophyte product for ryegrass

  John Caradus, David Hume, Alison Popay, Anouck de Bonth, Russell Croy, Natasha Forester, Richard George, Sarah Rosanowski, Paul Maclean, Wade Mace, Marty Faville, Michael Norriss, Brian Maw, Katrin Hewitt, Joanne Jensen, Sarah Finch

  151-169

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• Impact of selected Epichloë endophyte on perennial ryegrass yield performance across regions in New Zealand

  Justine Ferguson, Wayne Nichol, Allister Moorhead, Sarah McKenzie

  171-180

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• Effects of fungicide treatment on transmission of Epichloë endophyte in rye (Secale cereale)

  David Hume, Jo Drummond, Phil Rolston, Anouck de Bonth, Paul Maclean, Wayne Simpson, Richard Johnson, John Caradus

  181-188

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• Physiological responses and ergot alkaloid kinetics in steers rotating grazing toxic endophyte-infected tall fescue

  Ignacio Llada, Jeferson Lourenco, Mikayla, Utsav LAMICHHANE, Matthew Ross, Garret Suen, Dean Jones, Nicholas Hill, Nikolay Filipov

• Epichloë is not associated with the pollen of infected ryegrass plants

  Natasha Forester, Pranav Chettri, Debbie Hudson, Richard Johnson, Linda Johnson

  213-222

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• Epichloë endophyte survival in rye (Secale cereale) and perennial ryegrass (Lolium perenne) seeds under different storage conditions

  Anouck de Bonth, Paul Maclean, Richard Johnson, Wayne Simpson, John Caradus, David Hume

  223

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• Meadow fescue and its Epichloë endophytes in New Zealand

  Alan Stewart, David Hume, Fraser Harrison

  233-244

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• The effect of different ryegrass Epichloë endophytes on above-ground and subterranean invertebrate biodiversity in New Zealand sheep pastures

  Mark McNeill, Nicole Schon, Russell Croy, Diane Barton, Chikako van Koten, Stephen Goldson, Shengjing Shi

  245-259

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• Performance of Sheep Grazing Tall Fescue Cultivars Containing Non-Ergovaline Producing Endophytes

  James Thompson, Tom Nichols, Steven Reid

  261

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• Exploring ways to improve wheat productivity through the use of beneficial Epichloë endophytes

  Lisa Wood, Wayne Simpson, Richard Johnson, Stuart Roy, Rainer Hofmann, John Caradus

  263

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• Impact of respiration and CO2 on the survival of Epichloë festucae var. lolii strain AR37 in a cultivar of perennial ryegrass during short-term seed storage

  Maria Duter, John Hampton, Rainer Hofmann

  265

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• Alliance for Grassland Renewal’s impact on novel Epichloë endophyte tall fescue adoption in the US

  Nicholas Hill, Julie Moore

  267

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• Temperature-driven variations in Epichloë endophyte-mediated porina resistance in perennial ryegrass

  Katrin Hewitt, Joanne Jensen, Jan Sprosen, Chanatda Somchit, Alison Popay

  269

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• Impact of AR37, a selected Epichloë endophyte, on Italian ryegrass yield performance across regions in New Zealand

  Sarah McKenzie, Justine Ferguson; Wayne Nichol, Allister Moorhead

  271

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• Resistance to dollar spot disease in fine fescues is linked to the presence of the endophyte Epichloë festucae

  Ruying Wang, Trent Tate, Faith Belanger

  275

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• A novel Lolium multiflorum-Epichloë tembladerae association: Evaluation of plant growth, seed production and vertical endophyte transmission under drought and waterlogging conditions

  Daniel Ruiz Mínguez , Leopoldo Iannone , Maria Victoria Novas, Natalia Terlizzi , Vanesa Tossi , Patricia Mc Cargo

  277

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• Festulolium–Epichloë symbiosis: suppressing stubby root nematodes and delivering nematotoxic plant metabolites

  Nyambura Mwangi, Mark Stevens, Alistair Wright, Simon Edwards, Martin Hare, Matthew Back

  279

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• Epichloë endophytes from Elymus dahuricus enhance the growth and nutritional quality of Poa pratensis

  Mingxiang Du, Chunjie Li, Taixiang Chen

  281

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• Perennial ryegrass microbiomes: manipulating microbial communities for enhanced pasture performance

  Shengjing Shi, Sandra Young, Emily Gerard, Russell Croy, David Hume, Bernadette Prout, Nigel Bell, Stuart Card, Daniel Bastias, Sandeep Kumar, Hu Wang, Marty Faville, Maureen O’Callaghan

  287

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• Effects of Epichloë endophytes on the microbial communities and nutrient concentrations of Achnatherum inebrians roots

  Xiumei Nie, Daniel Bastías, Jinjin Liang, Xingxu Zhang

  293

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• Using niche occupancy from microbiome data to reveal potential fungal pathogens of established perennial ryegrass roots

  Nigel Bell, Bernadette Prout, Faith Mtandavari, David Hume, Sandra Young, Emily Gerard, Lee Alders, Shengjing Shi

  295

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• Wild progenitor species of maize (teosintes) have greater seedborne microbial diversity than domesticated maize

  Sandeep Kumar, Linda Johnson, Christina Moon, Anna Larking, Jana Schmidt, Qianhe Liu, Richard Johnson

  297

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• Arbuscular mycorrhizal fungi coupled with Epichloë endophytes reshaped the rhizosphere microbiome structure and induced synergistic resistance to leaf spot disease in perennial ryegrass

  Youlei Shen, Tingyu Duan

  299-300

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• Diversity of endophytic fungi in live and dead leaf sheaths of Brachypodium sylvaticum infected with stroma-forming and asymptomatic Epichloë endosymbionts

  Yuki Hatono, Shunsuke Matsuoka, Ryunosuke Tateno, Takashi Osono

  301

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• Bacterial symbionts of Epichloë fungal endophytes of grasses

  Daniel Bastías, Linda Johnson, Stuart Card

  303

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• Effects of a fungal volatile organic compound on microbiomes associated with perennial ryegrass and white clover under drought stress

  Sereyboth Soth, John Hampton, Steve Wakelin, Hossein Alizadeh, Artemio Mendoza-Mendoza

  305

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